diff --git a/src/client/inc/tscProfile.h b/src/client/inc/tscProfile.h
index 16b9efac38aaf7b03f21b13ba9316518c66e775d..193fac0fb00eaa20c883215e5708eea8f07f1bc9 100644
--- a/src/client/inc/tscProfile.h
+++ b/src/client/inc/tscProfile.h
@@ -26,7 +26,7 @@ void tscAddIntoSqlList(SSqlObj *pSql);
 void tscRemoveFromSqlList(SSqlObj *pSql);
 void tscAddIntoStreamList(SSqlStream *pStream);
 void tscRemoveFromStreamList(SSqlStream *pStream, SSqlObj *pSqlObj);
-char *tscBuildQueryStreamDesc(char *pMsg, STscObj *pObj);
+int  tscBuildQueryStreamDesc(void *pMsg, STscObj *pObj);
 void tscKillQuery(STscObj *pObj, uint32_t killId);
 void tscKillStream(STscObj *pObj, uint32_t killId);
 void tscKillConnection(STscObj *pObj);
diff --git a/src/client/inc/tsclient.h b/src/client/inc/tsclient.h
index 8e728508224d3d77bc1dd84b6ee55616382282eb..a5aee431bb0921eb2adf2f1762c4061d25a3a499 100644
--- a/src/client/inc/tsclient.h
+++ b/src/client/inc/tsclient.h
@@ -294,6 +294,7 @@ typedef struct STscObj {
   char               sversion[TSDB_VERSION_LEN];
   char               writeAuth : 1;
   char               superAuth : 1;
+  uint32_t           connId;
   struct SSqlObj *   pHb;
   struct SSqlObj *   sqlList;
   struct SSqlStream *streamList;
diff --git a/src/client/src/tscProfile.c b/src/client/src/tscProfile.c
index e6d9aad6e22257005140c0b08c229111b3e1fe7c..79d00bf5dc6e9075af64c12de776c8022841e180 100644
--- a/src/client/src/tscProfile.c
+++ b/src/client/src/tscProfile.c
@@ -19,6 +19,7 @@
 #include "ttime.h"
 #include "ttimer.h"
 #include "tutil.h"
+#include "taosmsg.h"
 
 void  tscSaveSlowQueryFp(void *handle, void *tmrId);
 void *tscSlowQueryConn = NULL;
@@ -96,7 +97,7 @@ void tscSaveSlowQuery(SSqlObj *pSql) {
   }
 
   tscTrace("%p query time:%" PRId64 " sql:%s", pSql, pSql->res.useconds, pSql->sqlstr);
-  int32_t sqlSize = TSDB_SHOW_SQL_LEN + size;
+  int32_t sqlSize = TSDB_SLOW_QUERY_SQL_LEN + size;
   
   char *sql = malloc(sqlSize);
   if (sql == NULL) {
@@ -106,9 +107,9 @@ void tscSaveSlowQuery(SSqlObj *pSql) {
   
   int len = snprintf(sql, size, "insert into %s.slowquery values(now, '%s', %" PRId64 ", %" PRId64 ", '", tsMonitorDbName,
           pSql->pTscObj->user, pSql->stime, pSql->res.useconds);
-  int sqlLen = snprintf(sql + len, TSDB_SHOW_SQL_LEN, "%s", pSql->sqlstr);
-  if (sqlLen > TSDB_SHOW_SQL_LEN - 1) {
-    sqlLen = len + TSDB_SHOW_SQL_LEN - 1;
+  int sqlLen = snprintf(sql + len, TSDB_SLOW_QUERY_SQL_LEN, "%s", pSql->sqlstr);
+  if (sqlLen > TSDB_SLOW_QUERY_SQL_LEN - 1) {
+    sqlLen = len + TSDB_SLOW_QUERY_SQL_LEN - 1;
   } else {
     sqlLen += len;
   }
@@ -205,28 +206,28 @@ void tscKillStream(STscObj *pObj, uint32_t killId) {
   }
 
   pthread_mutex_unlock(&pObj->mutex);
-  
+
   if (pStream) {
     tscTrace("%p stream:%p is killed, streamId:%d", pStream->pSql, pStream, killId);
+    if (pStream->callback) {
+      pStream->callback(pStream->param);
+    }
+    taos_close_stream(pStream);
+  } else {
+    tscError("failed to kill stream, streamId:%d not exist", killId);
   }
-
-  if (pStream->callback) {
-    pStream->callback(pStream->param);
-  }
-  taos_close_stream(pStream);
 }
 
-char *tscBuildQueryStreamDesc(char *pMsg, STscObj *pObj) {
-  char *  pMax = pMsg + TSDB_PAYLOAD_SIZE - 256;
+int tscBuildQueryStreamDesc(void *pMsg, STscObj *pObj) {
+  SCMHeartBeatMsg *pHeartbeat = pMsg;
+  int allocedQueriesNum = pHeartbeat->numOfQueries;
+  int allocedStreamsNum = pHeartbeat->numOfStreams;
   
-  SQqueryList *pQList = (SQqueryList *)pMsg;
-  pQList->numOfQueries = 0;
-
-  SQueryDesc *pQdesc = (SQueryDesc*)(pMsg + sizeof(SQqueryList));
+  pHeartbeat->numOfQueries = 0;
+  SQueryDesc *pQdesc = (SQueryDesc *)pHeartbeat->pData;
 
   // We extract the lock to tscBuildHeartBeatMsg function.
-  /* pthread_mutex_lock (&pObj->mutex); */
-  pMsg += sizeof(SQqueryList);
+
   SSqlObj *pSql = pObj->sqlList;
   while (pSql) {
     /*
@@ -240,47 +241,46 @@ char *tscBuildQueryStreamDesc(char *pMsg, STscObj *pObj) {
 
     strncpy(pQdesc->sql, pSql->sqlstr, TSDB_SHOW_SQL_LEN - 1);
     pQdesc->sql[TSDB_SHOW_SQL_LEN - 1] = 0;
-    pQdesc->stime = pSql->stime;
-    pQdesc->queryId = pSql->queryId;
-    pQdesc->useconds = pSql->res.useconds;
+    pQdesc->stime = htobe64(pSql->stime);
+    pQdesc->queryId = htonl(pSql->queryId);
+    pQdesc->useconds = htobe64(pSql->res.useconds);
 
-    pQList->numOfQueries++;
+    pHeartbeat->numOfQueries++;
     pQdesc++;
     pSql = pSql->next;
-    pMsg += sizeof(SQueryDesc);
-    if (pMsg > pMax) break;
+    if (pHeartbeat->numOfQueries >= allocedQueriesNum) break;
   }
 
-  SStreamList *pSList = (SStreamList *)pMsg;
-  pSList->numOfStreams = 0;
-  
-  SStreamDesc *pSdesc = (SStreamDesc*) (pMsg + sizeof(SStreamList));
+  pHeartbeat->numOfStreams = 0;
+  SStreamDesc *pSdesc = (SStreamDesc *)pQdesc;
 
-  pMsg += sizeof(SStreamList);
   SSqlStream *pStream = pObj->streamList;
   while (pStream) {
     strncpy(pSdesc->sql, pStream->pSql->sqlstr, TSDB_SHOW_SQL_LEN - 1);
     pSdesc->sql[TSDB_SHOW_SQL_LEN - 1] = 0;
-    pSdesc->streamId = pStream->streamId;
-    pSdesc->num = pStream->num;
+    pSdesc->streamId = htonl(pStream->streamId);
+    pSdesc->num = htobe64(pStream->num);
 
-    pSdesc->useconds = pStream->useconds;
-    pSdesc->stime = pStream->stime - pStream->interval;
-    pSdesc->ctime = pStream->ctime;
+    pSdesc->useconds = htobe64(pStream->useconds);
+    pSdesc->stime = htobe64(pStream->stime - pStream->interval);
+    pSdesc->ctime = htobe64(pStream->ctime);
 
-    pSdesc->slidingTime = pStream->slidingTime;
-    pSdesc->interval = pStream->interval;
+    pSdesc->slidingTime = htobe64(pStream->slidingTime);
+    pSdesc->interval = htobe64(pStream->interval);
 
-    pSList->numOfStreams++;
+    pHeartbeat->numOfStreams++;
     pSdesc++;
     pStream = pStream->next;
-    pMsg += sizeof(SStreamDesc);
-    if (pMsg > pMax) break;
+    if (pHeartbeat->numOfStreams >= allocedStreamsNum) break;
   }
 
-  /* pthread_mutex_unlock (&pObj->mutex); */
+  int32_t msgLen = pHeartbeat->numOfQueries * sizeof(SQueryDesc) + pHeartbeat->numOfStreams * sizeof(SStreamDesc) +
+                   sizeof(SCMHeartBeatMsg);
+  pHeartbeat->connId = htonl(pObj->connId);
+  pHeartbeat->numOfQueries = htonl(pHeartbeat->numOfQueries);
+  pHeartbeat->numOfStreams = htonl(pHeartbeat->numOfStreams);
 
-  return pMsg;
+  return msgLen;
 }
 
 void tscKillConnection(STscObj *pObj) {
diff --git a/src/client/src/tscSQLParser.c b/src/client/src/tscSQLParser.c
index 14ab14603f36660c8a5d15a612b015536a009147..bfa8a937915e7a7c39b2a6601a5a4d7bdec39e22 100644
--- a/src/client/src/tscSQLParser.c
+++ b/src/client/src/tscSQLParser.c
@@ -93,7 +93,7 @@ static int32_t validateArithmeticSQLExpr(tSQLExpr* pExpr, SQueryInfo* pQueryInfo
 static int32_t validateDNodeConfig(tDCLSQL* pOptions);
 static int32_t validateLocalConfig(tDCLSQL* pOptions);
 static int32_t validateColumnName(char* name);
-static int32_t setKillInfo(SSqlObj* pSql, struct SSqlInfo* pInfo);
+static int32_t setKillInfo(SSqlObj* pSql, struct SSqlInfo* pInfo, int32_t killType);
 
 static bool validateOneTags(SSqlCmd* pCmd, TAOS_FIELD* pTagField);
 static bool hasTimestampForPointInterpQuery(SQueryInfo* pQueryInfo);
@@ -531,7 +531,7 @@ int32_t tscToSQLCmd(SSqlObj* pSql, struct SSqlInfo* pInfo) {
     case TSDB_SQL_KILL_QUERY:
     case TSDB_SQL_KILL_STREAM:
     case TSDB_SQL_KILL_CONNECTION: {
-      if ((code = setKillInfo(pSql, pInfo)) != TSDB_CODE_SUCCESS) {
+      if ((code = setKillInfo(pSql, pInfo, pInfo->type)) != TSDB_CODE_SUCCESS) {
         return code;
       }
 
@@ -2229,37 +2229,45 @@ int32_t setShowInfo(SSqlObj* pSql, struct SSqlInfo* pInfo) {
   return TSDB_CODE_SUCCESS;
 }
 
-int32_t setKillInfo(SSqlObj* pSql, struct SSqlInfo* pInfo) {
-  const char* msg1 = "invalid ip address";
-  const char* msg2 = "invalid port";
+int32_t setKillInfo(SSqlObj* pSql, struct SSqlInfo* pInfo, int32_t killType) {
+  const char* msg1 = "invalid connection ID";
+  const char* msg2 = "invalid query ID";
+  const char* msg3 = "invalid stream ID";
 
   SSqlCmd* pCmd = &pSql->cmd;
   pCmd->command = pInfo->type;
-
-  SSQLToken* ip = &(pInfo->pDCLInfo->ip);
-  if (ip->n > TSDB_KILL_MSG_LEN) {
+  
+  SSQLToken* idStr = &(pInfo->pDCLInfo->ip);
+  if (idStr->n > TSDB_KILL_MSG_LEN) {
     return TSDB_CODE_INVALID_SQL;
   }
 
-  strncpy(pCmd->payload, ip->z, ip->n);
+  strncpy(pCmd->payload, idStr->z, idStr->n);
 
   const char delim = ':';
+  char* connIdStr = strtok(idStr->z, &delim);
+  char* queryIdStr = strtok(NULL, &delim);
 
-  char* ipStr = strtok(ip->z, &delim);
-  char* portStr = strtok(NULL, &delim);
-
-  if (!validateIpAddress(ipStr, strlen(ipStr))) {
+  int32_t connId = (int32_t)strtol(connIdStr, NULL, 10);
+  if (connId <= 0) {
     memset(pCmd->payload, 0, strlen(pCmd->payload));
-
     return invalidSqlErrMsg(tscGetErrorMsgPayload(pCmd), msg1);
   }
 
-  uint16_t port = (uint16_t)strtol(portStr, NULL, 10);
-  if (port <= 0 || port > 65535) {
-    memset(pCmd->payload, 0, strlen(pCmd->payload));
-    return invalidSqlErrMsg(tscGetErrorMsgPayload(pCmd), msg2);
+  if (killType == TSDB_SQL_KILL_CONNECTION) {
+    return TSDB_CODE_SUCCESS;
   }
 
+  int32_t queryId = (int32_t)strtol(queryIdStr, NULL, 10);
+  if (queryId <= 0) {
+    memset(pCmd->payload, 0, strlen(pCmd->payload));
+    if (killType == TSDB_SQL_KILL_QUERY) {
+      return invalidSqlErrMsg(tscGetErrorMsgPayload(pCmd), msg2);
+    } else {
+      return invalidSqlErrMsg(tscGetErrorMsgPayload(pCmd), msg3);
+    }
+  }
+  
   return TSDB_CODE_SUCCESS;
 }
 
diff --git a/src/client/src/tscServer.c b/src/client/src/tscServer.c
index ef9ca9de36950f092aa555ed5b17a979329726cf..5acb3237573e803e49d60db14399a94fc3e64533 100644
--- a/src/client/src/tscServer.c
+++ b/src/client/src/tscServer.c
@@ -114,6 +114,8 @@ void tscProcessHeartBeatRsp(void *param, TAOS_RES *tres, int code) {
     if (pIpList->numOfIps > 0) 
       tscSetMgmtIpList(pIpList);
 
+    pSql->pTscObj->connId = htonl(pRsp->connId);
+
     if (pRsp->killConnection) {
       tscKillConnection(pObj);
     } else {
@@ -1129,13 +1131,6 @@ int32_t tscBuildKillMsg(SSqlObj *pSql, SSqlInfo *pInfo) {
   SSqlCmd *pCmd = &pSql->cmd;
   pCmd->payloadLen = sizeof(SCMKillQueryMsg);
 
-  if (TSDB_CODE_SUCCESS != tscAllocPayload(pCmd, pCmd->payloadLen)) {
-    tscError("%p failed to malloc for query msg", pSql);
-    return TSDB_CODE_CLI_OUT_OF_MEMORY;
-  }
-
-  SCMKillQueryMsg *pKill = (SCMKillQueryMsg*)pCmd->payload;
-  strncpy(pKill->queryId, pInfo->pDCLInfo->ip.z, pInfo->pDCLInfo->ip.n);
   switch (pCmd->command) {
     case TSDB_SQL_KILL_QUERY:
       pCmd->msgType = TSDB_MSG_TYPE_CM_KILL_QUERY;
@@ -1743,57 +1738,43 @@ int tscBuildSTableVgroupMsg(SSqlObj *pSql, SSqlInfo *pInfo) {
   return TSDB_CODE_SUCCESS;
 }
 
-int tscEstimateHeartBeatMsgLength(SSqlObj *pSql) {
-  int      size = 0;
+int tscBuildHeartBeatMsg(SSqlObj *pSql, SSqlInfo *pInfo) {
+  SSqlCmd *pCmd = &pSql->cmd;
   STscObj *pObj = pSql->pTscObj;
 
-  size += tsRpcHeadSize;
-  size += sizeof(SQqueryList);
+  pthread_mutex_lock(&pObj->mutex);
 
+  int32_t numOfQueries = 2;
   SSqlObj *tpSql = pObj->sqlList;
   while (tpSql) {
-    size += sizeof(SQueryDesc);
     tpSql = tpSql->next;
+    numOfQueries++;
   }
 
-  size += sizeof(SStreamList);
+  int32_t numOfStreams = 2;
   SSqlStream *pStream = pObj->streamList;
   while (pStream) {
-    size += sizeof(SStreamDesc);
     pStream = pStream->next;
+    numOfStreams++;
   }
 
-  return size + TSDB_EXTRA_PAYLOAD_SIZE;
-}
-
-int tscBuildHeartBeatMsg(SSqlObj *pSql, SSqlInfo *pInfo) {
-  char *pMsg, *pStart;
-  int   msgLen = 0;
-  int   size = 0;
-
-  SSqlCmd *pCmd = &pSql->cmd;
-  STscObj *pObj = pSql->pTscObj;
-
-  pthread_mutex_lock(&pObj->mutex);
-
-  size = tscEstimateHeartBeatMsgLength(pSql);
+  int size = numOfQueries * sizeof(SQueryDesc) + numOfStreams * sizeof(SStreamDesc) + sizeof(SCMHeartBeatMsg) + 100;
   if (TSDB_CODE_SUCCESS != tscAllocPayload(pCmd, size)) {
     pthread_mutex_unlock(&pObj->mutex);
     tscError("%p failed to malloc for heartbeat msg", pSql);
     return -1;
   }
 
-  pMsg = pCmd->payload;
-  pStart = pMsg;
+  SCMHeartBeatMsg *pHeartbeat = (SCMHeartBeatMsg *)pCmd->payload;
+  pHeartbeat->numOfQueries = numOfQueries;
+  pHeartbeat->numOfStreams = numOfStreams;
+  int msgLen = tscBuildQueryStreamDesc(pHeartbeat, pObj);
 
-  pMsg = tscBuildQueryStreamDesc(pMsg, pObj);
   pthread_mutex_unlock(&pObj->mutex);
 
-  msgLen = pMsg - pStart;
   pCmd->payloadLen = msgLen;
   pCmd->msgType = TSDB_MSG_TYPE_CM_HEARTBEAT;
 
-  assert(msgLen + minMsgSize() <= size);
   return TSDB_CODE_SUCCESS;
 }
 
@@ -2204,6 +2185,7 @@ int tscProcessConnectRsp(SSqlObj *pSql) {
   strcpy(pObj->sversion, pConnect->serverVersion);
   pObj->writeAuth = pConnect->writeAuth;
   pObj->superAuth = pConnect->superAuth;
+  pObj->connId = htonl(pConnect->connId);
   taosTmrReset(tscProcessActivityTimer, tsShellActivityTimer * 500, pObj, tscTmr, &pObj->pTimer);
 
   return 0;
diff --git a/src/common/inc/tdataformat.h b/src/common/inc/tdataformat.h
index cb39b990e53fe54ffe20a1136a8a12d2f2d86875..3a84ce8f6f3ad369e9f6972d79d3356451c4ef25 100644
--- a/src/common/inc/tdataformat.h
+++ b/src/common/inc/tdataformat.h
@@ -251,7 +251,7 @@ void       tdFreeDataCols(SDataCols *pCols);
 void       tdAppendDataRowToDataCol(SDataRow row, STSchema *pSchema, SDataCols *pCols);
 void       tdPopDataColsPoints(SDataCols *pCols, int pointsToPop);  //!!!!
 int        tdMergeDataCols(SDataCols *target, SDataCols *src, int rowsToMerge);
-void       tdMergeTwoDataCols(SDataCols *target, SDataCols *src1, int *iter1, SDataCols *src2, int *iter2, int tRows);
+void       tdMergeTwoDataCols(SDataCols *target, SDataCols *src1, int *iter1, int limit1, SDataCols *src2, int *iter2, int limit2, int tRows);
 
 // ----------------- K-V data row structure
 /*
diff --git a/src/common/src/tdataformat.c b/src/common/src/tdataformat.c
index 5cd3b79aa1d1d5b088473cd8cdc3f8a0ec801ec5..7880a4b3021d71872f194f7bd5512d03ee940363 100644
--- a/src/common/src/tdataformat.c
+++ b/src/common/src/tdataformat.c
@@ -450,7 +450,8 @@ int tdMergeDataCols(SDataCols *target, SDataCols *source, int rowsToMerge) {
 
     int iter1 = 0;
     int iter2 = 0;
-    tdMergeTwoDataCols(target, pTarget, &iter1, source, &iter2, pTarget->numOfRows + rowsToMerge);
+    tdMergeTwoDataCols(target, pTarget, &iter1, pTarget->numOfRows, source, &iter2, source->numOfRows,
+                       pTarget->numOfRows + rowsToMerge);
   }
 
   tdFreeDataCols(pTarget);
@@ -461,15 +462,15 @@ _err:
   return -1;
 }
 
-void tdMergeTwoDataCols(SDataCols *target, SDataCols *src1, int *iter1, SDataCols *src2, int *iter2, int tRows) {
-  // TODO: add resolve duplicate key here
+void tdMergeTwoDataCols(SDataCols *target, SDataCols *src1, int *iter1, int limit1, SDataCols *src2, int *iter2, int limit2, int tRows) {
   tdResetDataCols(target);
+  ASSERT(limit1 <= src1->numOfRows && limit2 <= src2->numOfRows);
 
   while (target->numOfRows < tRows) {
-    if (*iter1 >= src1->numOfRows && *iter2 >= src2->numOfRows) break;
+    if (*iter1 >= limit1 && *iter2 >= limit2) break;
 
-    TSKEY key1 = (*iter1 >= src1->numOfRows) ? INT64_MAX : ((TSKEY *)(src1->cols[0].pData))[*iter1];
-    TSKEY key2 = (*iter2 >= src2->numOfRows) ? INT64_MAX : ((TSKEY *)(src2->cols[0].pData))[*iter2];
+    TSKEY key1 = (*iter1 >= limit1) ? INT64_MAX : ((TSKEY *)(src1->cols[0].pData))[*iter1];
+    TSKEY key2 = (*iter2 >= limit2) ? INT64_MAX : ((TSKEY *)(src2->cols[0].pData))[*iter2];
 
     if (key1 <= key2) {
       for (int i = 0; i < src1->numOfCols; i++) {
diff --git a/src/dnode/src/dnodeMain.c b/src/dnode/src/dnodeMain.c
index 5e81d77489fa8a49e1593c663c88d2eaa053cfb0..7683843371ab4ba0a0bfb6d3b119fbbeca031b8d 100644
--- a/src/dnode/src/dnodeMain.c
+++ b/src/dnode/src/dnodeMain.c
@@ -46,7 +46,7 @@ typedef struct {
   void              (*cleanup)();
 } SDnodeComponent;
 
-static const SDnodeComponent SDnodeComponents[] = {
+static const SDnodeComponent tsDnodeComponents[] = {
   {"storage", dnodeInitStorage,    dnodeCleanupStorage},
   {"vread",   dnodeInitVnodeRead,  dnodeCleanupVnodeRead},
   {"vwrite",  dnodeInitVnodeWrite, dnodeCleanupVnodeWrite},
@@ -72,14 +72,14 @@ static int dnodeCreateDir(const char *dir) {
 
 static void dnodeCleanupComponents(int32_t stepId) {
   for (int32_t i = stepId; i >= 0; i--) {
-    SDnodeComponents[i].cleanup();
+    tsDnodeComponents[i].cleanup();
   }
 }
 
 static int32_t dnodeInitComponents() {
   int32_t code = 0;
-  for (int32_t i = 0; i < sizeof(SDnodeComponents) / sizeof(SDnodeComponents[0]); i++) {
-    if (SDnodeComponents[i].init() != 0) {
+  for (int32_t i = 0; i < sizeof(tsDnodeComponents) / sizeof(tsDnodeComponents[0]); i++) {
+    if (tsDnodeComponents[i].init() != 0) {
       dnodeCleanupComponents(i);
       code = -1;
       break;
@@ -133,7 +133,7 @@ int32_t dnodeInitSystem() {
 void dnodeCleanUpSystem() {
   if (dnodeGetRunStatus() != TSDB_DNODE_RUN_STATUS_STOPPED) {
     dnodeSetRunStatus(TSDB_DNODE_RUN_STATUS_STOPPED);
-    dnodeCleanupComponents(sizeof(SDnodeComponents) / sizeof(SDnodeComponents[0]) - 1);
+    dnodeCleanupComponents(sizeof(tsDnodeComponents) / sizeof(tsDnodeComponents[0]) - 1);
     taos_cleanup();
     taosCloseLog();
   }
diff --git a/src/inc/taosdef.h b/src/inc/taosdef.h
index 7d1b3046d937741a85d9bdd54e57d86b919cb89d..29181ed78faa56eef05ada6a119bf25f5b9ee67c 100644
--- a/src/inc/taosdef.h
+++ b/src/inc/taosdef.h
@@ -231,7 +231,8 @@ void tsDataSwap(void *pLeft, void *pRight, int32_t type, int32_t size);
 #define TSDB_SHELL_VNODE_BITS     24
 #define TSDB_SHELL_SID_MASK       0xFF
 #define TSDB_HTTP_TOKEN_LEN       20
-#define TSDB_SHOW_SQL_LEN         512
+#define TSDB_SHOW_SQL_LEN         64
+#define TSDB_SLOW_QUERY_SQL_LEN   512
 
 #define TSDB_METER_STATE_OFFLINE  0
 #define TSDB_METER_STATE_ONLLINE  1
diff --git a/src/inc/taoserror.h b/src/inc/taoserror.h
index f11a2cf750a36c36f886e6b23ec068555fc4c23c..62c97c92f10c656893abe044a1cacd8b23c305f4 100644
--- a/src/inc/taoserror.h
+++ b/src/inc/taoserror.h
@@ -150,6 +150,7 @@ TAOS_DEFINE_ERROR(TSDB_CODE_NO_DISK_PERMISSIONS,        0, 0x0405, "no disk perm
 TAOS_DEFINE_ERROR(TSDB_CODE_FILE_CORRUPTED,             0, 0x0406, "file corrupted")
 TAOS_DEFINE_ERROR(TSDB_CODE_MEMORY_CORRUPTED,           0, 0x0407, "memory corrupted")
 TAOS_DEFINE_ERROR(TSDB_CODE_NOT_SUCH_FILE_OR_DIR,       0, 0x0408, "no such file or directory")
+TAOS_DEFINE_ERROR(TSDB_CODE_TOO_MANY_SHELL_CONNS,       0, 0x0409, "too many shell conns")
 
 // client
 TAOS_DEFINE_ERROR(TSDB_CODE_INVALID_CLIENT_VERSION,     0, 0x0481, "invalid client version")
diff --git a/src/inc/taosmsg.h b/src/inc/taosmsg.h
index 2cf0567f5aa926fd5cf9907b926c2ce1d094f7f3..88c6f9cf26ecf7dbeab27da5f7a514ec5d22b71e 100644
--- a/src/inc/taosmsg.h
+++ b/src/inc/taosmsg.h
@@ -137,6 +137,7 @@ enum _mgmt_table {
   TSDB_MGMT_TABLE_SCORES,
   TSDB_MGMT_TABLE_GRANTS,
   TSDB_MGMT_TABLE_VNODES,
+  TSDB_MGMT_TABLE_STREAMTABLES,
   TSDB_MGMT_TABLE_MAX,
 };
 
@@ -299,6 +300,9 @@ typedef struct {
   char      serverVersion[TSDB_VERSION_LEN];
   int8_t    writeAuth;
   int8_t    superAuth;
+  int8_t    reserved1;
+  int8_t    reserved2;
+  int32_t   connId;
   SRpcIpSet ipList;
 } SCMConnectRsp;
 
@@ -716,16 +720,10 @@ typedef struct {
 } SStreamDesc;
 
 typedef struct {
-  int32_t    numOfQueries;
-} SQqueryList;
-
-typedef struct {
-  int32_t     numOfStreams;
-} SStreamList;
-
-typedef struct {
-  SQqueryList qlist;
-  SStreamList slist;
+  uint32_t connId;
+  int32_t  numOfQueries;
+  int32_t  numOfStreams;
+  char     pData[];
 } SCMHeartBeatMsg;
 
 typedef struct {
@@ -733,6 +731,7 @@ typedef struct {
   uint32_t  streamId;
   uint32_t  totalDnodes;
   uint32_t  onlineDnodes;
+  uint32_t  connId;
   int8_t    killConnection;
   SRpcIpSet ipList;
 } SCMHeartBeatRsp;
diff --git a/src/inc/ttokendef.h b/src/inc/ttokendef.h
index effaafc4e778dad3ab1c459500e8753e74b6e38e..d388bc9dbeea2802ccebfca85e6126c5cdc3220d 100644
--- a/src/inc/ttokendef.h
+++ b/src/inc/ttokendef.h
@@ -148,8 +148,8 @@
 #define TK_SET                            130
 #define TK_KILL                           131
 #define TK_CONNECTION                     132
-#define TK_COLON                          133
-#define TK_STREAM                         134
+#define TK_STREAM                         133
+#define TK_COLON                          134
 #define TK_ABORT                          135
 #define TK_AFTER                          136
 #define TK_ATTACH                         137
diff --git a/src/mnode/inc/mnodeDef.h b/src/mnode/inc/mnodeDef.h
index 594fd3fd50b0adede5e5ff759a43e8f2ddba9ec2..cf9058b9cf02e5a4f475500f9033eb1e645cb83b 100644
--- a/src/mnode/inc/mnodeDef.h
+++ b/src/mnode/inc/mnodeDef.h
@@ -182,8 +182,6 @@ typedef struct SUserObj {
   int8_t            updateEnd[1];
   int32_t           refCount;
   struct SAcctObj * pAcct;
-  SQqueryList *     pQList;  // query list
-  SStreamList *     pSList;  // stream list
 } SUserObj;
 
 typedef struct {
diff --git a/src/mnode/inc/mnodeProfile.h b/src/mnode/inc/mnodeProfile.h
index 0311983a3812b68bfe8253fcc94733f65c124119..30745db035c675004ae8b449c282c7fc26a2e172 100644
--- a/src/mnode/inc/mnodeProfile.h
+++ b/src/mnode/inc/mnodeProfile.h
@@ -21,9 +21,30 @@ extern "C" {
 #endif
 #include "mnodeDef.h"
 
+typedef struct {
+  char     user[TSDB_USER_LEN + 1];
+  int8_t   killed;
+  uint16_t port;
+  uint32_t ip;
+  uint32_t connId;
+  uint64_t stime;
+  uint64_t lastAccess;
+  uint32_t queryId;
+  uint32_t streamId;
+  int32_t  numOfQueries;
+  int32_t  numOfStreams;
+  SStreamDesc *pStreams;
+  SQueryDesc * pQueries;
+} SConnObj;
+
 int32_t mnodeInitProfile();
 void    mnodeCleanupProfile();
 
+SConnObj *mnodeCreateConn(char *user, uint32_t ip, uint16_t port);
+SConnObj *mnodeAccquireConn(uint32_t connId, char *user, uint32_t ip, uint16_t port);
+void      mnodeReleaseConn(SConnObj *pConn);
+int32_t   mnodeSaveQueryStreamList(SConnObj *pConn, SCMHeartBeatMsg *pHBMsg);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/mnode/inc/mnodeShow.h b/src/mnode/inc/mnodeShow.h
index d571eabfd8a6853ef7311d358600994cd701d9e1..da66e7167822d0077a8b5cad99489868eab7485d 100644
--- a/src/mnode/inc/mnodeShow.h
+++ b/src/mnode/inc/mnodeShow.h
@@ -28,6 +28,7 @@ typedef int32_t (*SShowMetaFp)(STableMetaMsg *pMeta, SShowObj *pShow, void *pCon
 typedef int32_t (*SShowRetrieveFp)(SShowObj *pShow, char *data, int32_t rows, void *pConn);
 void mnodeAddShowMetaHandle(uint8_t showType, SShowMetaFp fp);
 void mnodeAddShowRetrieveHandle(uint8_t showType, SShowRetrieveFp fp);
+void mnodeVacuumResult(char *data, int32_t numOfCols, int32_t rows, int32_t capacity, SShowObj *pShow);
 
 #ifdef __cplusplus
 }
diff --git a/src/mnode/src/mnodeMain.c b/src/mnode/src/mnodeMain.c
index baecfac0775983ca34706a838a1667544c1bf179..298d10993beee3262a5dbebc6184a8f5a40d8b73 100644
--- a/src/mnode/src/mnodeMain.c
+++ b/src/mnode/src/mnodeMain.c
@@ -33,14 +33,54 @@
 #include "mnodeUser.h"
 #include "mnodeTable.h"
 #include "mnodeShow.h"
+#include "mnodeProfile.h"
+
+typedef struct {
+  const char *const name;
+  int               (*init)();
+  void              (*cleanup)();
+} SMnodeComponent;
 
 void *tsMnodeTmr;
 static bool tsMgmtIsRunning = false;
 
+static const SMnodeComponent tsMnodeComponents[] = {
+  {"profile", mnodeInitProfile, mnodeCleanupProfile},
+  {"accts",   mnodeInitAccts,   mnodeCleanupAccts},
+  {"users",   mnodeInitUsers,   mnodeCleanupUsers},
+  {"dnodes",  mnodeInitDnodes,  mnodeCleanupDnodes},
+  {"dbs",     mnodeInitDbs,     mnodeCleanupDbs},
+  {"vgroups", mnodeInitVgroups, mnodeCleanupVgroups},
+  {"tables",  mnodeInitTables,  mnodeCleanupTables},  
+  {"mnodes",  mnodeInitMnodes,  mnodeCleanupMnodes},
+  {"sdb",     sdbInit,          sdbCleanUp},
+  {"balance", balanceInit,      balanceCleanUp},
+  {"grant",   grantInit,        grantCleanUp},
+  {"show",    mnodeInitShow,    mnodeCleanUpShow}
+};
+
 static void mnodeInitTimer();
 static void mnodeCleanupTimer();
 static bool mnodeNeedStart() ;
 
+static void mnodeCleanupComponents(int32_t stepId) {
+  for (int32_t i = stepId; i >= 0; i--) {
+    tsMnodeComponents[i].cleanup();
+  }
+}
+
+static int32_t mnodeInitComponents() {
+  int32_t code = 0;
+  for (int32_t i = 0; i < sizeof(tsMnodeComponents) / sizeof(tsMnodeComponents[0]); i++) {
+    if (tsMnodeComponents[i].init() != 0) {
+      mnodeCleanupComponents(i);
+      code = -1;
+      break;
+    }
+  }
+  return code;
+}
+
 int32_t mnodeStartSystem() {
   if (tsMgmtIsRunning) {
     mPrint("mnode module already started...");
@@ -57,57 +97,7 @@ int32_t mnodeStartSystem() {
   dnodeAllocateMnodeRqueue();
   dnodeAllocateMnodePqueue();
 
-  if (mnodeInitAccts() < 0) {
-    mError("failed to init accts");
-    return -1;
-  }
-
-  if (mnodeInitUsers() < 0) {
-    mError("failed to init users");
-    return -1;
-  }
-
-  if (mnodeInitDnodes() < 0) {
-    mError("failed to init dnodes");
-    return -1;
-  }
-
-  if (mnodeInitDbs() < 0) {
-    mError("failed to init dbs");
-    return -1;
-  }
-
-  if (mnodeInitVgroups() < 0) {
-    mError("failed to init vgroups");
-    return -1;
-  }
-
-  if (mnodeInitTables() < 0) {
-    mError("failed to init tables");
-    return -1;
-  }
-
-  if (mnodeInitMnodes() < 0) {
-    mError("failed to init mnodes");
-    return -1;
-  }
-
-  if (sdbInit() < 0) {
-    mError("failed to init sdb");
-    return -1;
-  }
-
-  if (balanceInit() < 0) {
-    mError("failed to init balance")
-  }
-
-  if (grantInit() < 0) {
-    mError("failed to init grant");
-    return -1;
-  }
-
-  if (mnodeInitShow() < 0) {
-    mError("failed to init show");
+  if (mnodeInitComponents() != 0) {
     return -1;
   }
 
@@ -115,7 +105,6 @@ int32_t mnodeStartSystem() {
   tsMgmtIsRunning = true;
 
   mPrint("mnode is initialized successfully");
-
   return 0;
 }
 
@@ -133,17 +122,8 @@ void mnodeCleanupSystem() {
   dnodeFreeMnodeRqueue();
   dnodeFreeMnodePqueue();
   mnodeCleanupTimer();
-  mnodeCleanUpShow();
-  grantCleanUp();
-  balanceCleanUp();
-  sdbCleanUp();
-  mnodeCleanupMnodes();
-  mnodeCleanupTables();
-  mnodeCleanupVgroups();
-  mnodeCleanupDbs();
-  mnodeCleanupDnodes();
-  mnodeCleanupUsers();
-  mnodeCleanupAccts();
+  mnodeCleanupComponents(sizeof(tsMnodeComponents) / sizeof(tsMnodeComponents[0]) - 1);
+
   mPrint("mnode is cleaned up");
 }
 
diff --git a/src/mnode/src/mnodeProfile.c b/src/mnode/src/mnodeProfile.c
index a37f5436c6ee70722dd131373f5ffbe3b0298564..49f79a54f1092540433faa9a766f3ff944a5ed29 100644
--- a/src/mnode/src/mnodeProfile.c
+++ b/src/mnode/src/mnodeProfile.c
@@ -18,6 +18,10 @@
 #include "taosmsg.h"
 #include "taoserror.h"
 #include "tutil.h"
+#include "ttime.h"
+#include "tcache.h"
+#include "tglobal.h"
+#include "tdataformat.h"
 #include "mnode.h"
 #include "mnodeDef.h"
 #include "mnodeInt.h"
@@ -32,153 +36,170 @@
 #include "mnodeVgroup.h"
 #include "mnodeWrite.h"
 
-int32_t mnodeSaveQueryStreamList(SCMHeartBeatMsg *pHBMsg);
-
-int32_t mnodeKillQuery(char *qidstr, void *pConn);
-int32_t mnodeKillStream(char *qidstr, void *pConn);
-int32_t mnodeKillConnection(char *qidstr, void *pConn);
-
-typedef struct {
-  char     user[TSDB_TABLE_ID_LEN + 1];
-  uint64_t stime;
-  uint32_t ip;
-  uint16_t port;
-} SConnInfo;
-
-typedef struct {
-  int       numOfConns;
-  int       index;
-  SConnInfo connInfo[];
-} SConnShow;
-
-typedef struct {
-  uint32_t ip;
-  uint16_t port;
-  char     user[TSDB_TABLE_ID_LEN+ 1];
-} SCDesc;
-
-typedef struct {
-  int32_t      index;
-  int32_t      numOfQueries;
-  SCDesc * connInfo;
-  SCDesc **cdesc;
-  SQueryDesc   qdesc[];
-} SQueryShow;
-
-typedef struct {
-  int32_t      index;
-  int32_t      numOfStreams;
-  SCDesc * connInfo;
-  SCDesc **cdesc;
-  SStreamDesc   sdesc[];
-} SStreamShow;
-
-int32_t  mgmtSaveQueryStreamList(SCMHeartBeatMsg *pHBMsg) {
-//  SAcctObj *pAcct = pConn->pAcct;
-//
-//  if (contLen <= 0 || pAcct == NULL) {
-//    return 0;
-//  }
-//
-//  pthread_mutex_lock(&pAcct->mutex);
-//
-//  if (pConn->pQList) {
-//    pAcct->acctInfo.numOfQueries -= pConn->pQList->numOfQueries;
-//    pAcct->acctInfo.numOfStreams -= pConn->pSList->numOfStreams;
-//  }
-//
-//  pConn->pQList = realloc(pConn->pQList, contLen);
-//  memcpy(pConn->pQList, cont, contLen);
-//
-//  pConn->pSList = (SStreamList *)(((char *)pConn->pQList) + pConn->pQList->numOfQueries * sizeof(SQueryDesc) + sizeof(SQqueryList));
-//
-//  pAcct->acctInfo.numOfQueries += pConn->pQList->numOfQueries;
-//  pAcct->acctInfo.numOfStreams += pConn->pSList->numOfStreams;
-//
-//  pthread_mutex_unlock(&pAcct->mutex);
+#define CONN_KEEP_TIME  (tsShellActivityTimer * 3)
+#define CONN_CHECK_TIME (tsShellActivityTimer * 2)
+#define QUERY_ID_SIZE   20
+
+extern void *tsMnodeTmr;
+static SCacheObj *tsMnodeConnCache = NULL;
+static uint32_t tsConnIndex = 0;
+
+static int32_t mnodeGetQueryMeta(STableMetaMsg *pMeta, SShowObj *pShow, void *pConn);
+static int32_t mnodeRetrieveQueries(SShowObj *pShow, char *data, int32_t rows, void *pConn);
+static int32_t mnodeGetConnsMeta(STableMetaMsg *pMeta, SShowObj *pShow, void *pConn);
+static int32_t mnodeRetrieveConns(SShowObj *pShow, char *data, int32_t rows, void *pConn);
+static int32_t mnodeGetStreamMeta(STableMetaMsg *pMeta, SShowObj *pShow, void *pConn);
+static int32_t mnodeRetrieveStreams(SShowObj *pShow, char *data, int32_t rows, void *pConn);
+static void    mnodeFreeConn(void *data);
+static int32_t mnodeProcessKillQueryMsg(SMnodeMsg *pMsg);
+static int32_t mnodeProcessKillStreamMsg(SMnodeMsg *pMsg);
+static int32_t mnodeProcessKillConnectionMsg(SMnodeMsg *pMsg);
 
-  return TSDB_CODE_SUCCESS;
+int32_t mnodeInitProfile() {
+  mnodeAddShowMetaHandle(TSDB_MGMT_TABLE_QUERIES, mnodeGetQueryMeta);
+  mnodeAddShowRetrieveHandle(TSDB_MGMT_TABLE_QUERIES, mnodeRetrieveQueries);
+  mnodeAddShowMetaHandle(TSDB_MGMT_TABLE_CONNS, mnodeGetConnsMeta);
+  mnodeAddShowRetrieveHandle(TSDB_MGMT_TABLE_CONNS, mnodeRetrieveConns);
+  mnodeAddShowMetaHandle(TSDB_MGMT_TABLE_STREAMS, mnodeGetStreamMeta);
+  mnodeAddShowRetrieveHandle(TSDB_MGMT_TABLE_STREAMS, mnodeRetrieveStreams);
+
+  mnodeAddWriteMsgHandle(TSDB_MSG_TYPE_CM_KILL_QUERY, mnodeProcessKillQueryMsg);
+  mnodeAddWriteMsgHandle(TSDB_MSG_TYPE_CM_KILL_STREAM, mnodeProcessKillStreamMsg);
+  mnodeAddWriteMsgHandle(TSDB_MSG_TYPE_CM_KILL_CONN, mnodeProcessKillConnectionMsg);
+
+  tsMnodeConnCache = taosCacheInitWithCb(tsMnodeTmr, CONN_CHECK_TIME, mnodeFreeConn);
+  return 0;
 }
 
-int32_t mnodeGetQueries(SShowObj *pShow, void *pConn) {
-//  SAcctObj *  pAcct = pConn->pAcct;
-//  SQueryShow *pQueryShow;
-//
-//  pthread_mutex_lock(&pAcct->mutex);
-//
-//  pQueryShow = malloc(sizeof(SQueryDesc) * pAcct->acctInfo.numOfQueries + sizeof(SQueryShow));
-//  pQueryShow->numOfQueries = 0;
-//  pQueryShow->index = 0;
-//  pQueryShow->connInfo = NULL;
-//  pQueryShow->cdesc = NULL;
-//
-//  if (pAcct->acctInfo.numOfQueries > 0) {
-//    pQueryShow->connInfo = (SCDesc *)malloc(pAcct->acctInfo.numOfConns * sizeof(SCDesc));
-//    pQueryShow->cdesc = (SCDesc **)malloc(pAcct->acctInfo.numOfQueries * sizeof(SCDesc *));
-//
-//    pConn = pAcct->pConn;
-//    SQueryDesc * pQdesc = pQueryShow->qdesc;
-//    SCDesc * pCDesc = pQueryShow->connInfo;
-//    SCDesc **ppCDesc = pQueryShow->cdesc;
-//
-//    while (pConn) {
-//      if (pConn->pQList && pConn->pQList->numOfQueries > 0) {
-//        pCDesc->ip = pConn->ip;
-//        pCDesc->port = pConn->port;
-//        strcpy(pCDesc->user, pConn->pUser->user);
-//
-//        memcpy(pQdesc, pConn->pQList->qdesc, sizeof(SQueryDesc) * pConn->pQList->numOfQueries);
-//        pQdesc += pConn->pQList->numOfQueries;
-//        pQueryShow->numOfQueries += pConn->pQList->numOfQueries;
-//        for (int32_t i = 0; i < pConn->pQList->numOfQueries; ++i, ++ppCDesc) *ppCDesc = pCDesc;
-//
-//        pCDesc++;
-//      }
-//      pConn = pConn->next;
-//    }
-//  }
-//
-//  pthread_mutex_unlock(&pAcct->mutex);
-//
-//  // sorting based on useconds
-//
-//  pShow->pIter = pQueryShow;
+void mnodeCleanupProfile() {
+  if (tsMnodeConnCache != NULL) {
+    mPrint("conn cache is cleanup");
+    taosCacheCleanup(tsMnodeConnCache);
+    tsMnodeConnCache = NULL;
+  }
+}
 
-  return 0;
+SConnObj *mnodeCreateConn(char *user, uint32_t ip, uint16_t port) {
+  int32_t connSize = taosHashGetSize(tsMnodeConnCache->pHashTable);
+  if (connSize > tsMaxShellConns) {
+    mError("failed to create conn for user:%s ip:%s:%u, conns:%d larger than maxShellConns:%d, ", user, taosIpStr(ip),
+           port, connSize, tsMaxShellConns);
+    terrno = TSDB_CODE_TOO_MANY_SHELL_CONNS;
+    return NULL;
+  }
+
+  uint32_t connId = atomic_add_fetch_32(&tsConnIndex, 1);
+  if (connId == 0) atomic_add_fetch_32(&tsConnIndex, 1);
+
+  SConnObj connObj = {
+    .ip     = ip,
+    .port   = port,
+    .connId = connId,
+    .stime  = taosGetTimestampMs()
+  };
+  strcpy(connObj.user, user);
+  
+  char key[10];
+  sprintf(key, "%u", connId);  
+  SConnObj *pConn = taosCachePut(tsMnodeConnCache, key, &connObj, sizeof(connObj), CONN_KEEP_TIME);
+  
+  mTrace("connId:%d, is created, user:%s ip:%s:%u", connId, user, taosIpStr(ip), port);
+  return pConn;
 }
 
-int32_t mnodeGetQueryMeta(STableMetaMsg *pMeta, SShowObj *pShow, void *pConn) {
-  int32_t cols = 0;
+void mnodeReleaseConn(SConnObj *pConn) {
+  if(pConn == NULL) return;
+  taosCacheRelease(tsMnodeConnCache, (void**)&pConn, false);
+}
+
+SConnObj *mnodeAccquireConn(uint32_t connId, char *user, uint32_t ip, uint16_t port) {
+  char key[10];
+  sprintf(key, "%u", connId);
+  uint64_t expireTime = CONN_KEEP_TIME * 1000 + (uint64_t)taosGetTimestampMs();
+
+  SConnObj *pConn = taosCacheUpdateExpireTimeByName(tsMnodeConnCache, key, expireTime);
+  if (pConn == NULL) {
+    mError("connId:%d, is already destroyed, user:%s ip:%s:%u", connId, user, taosIpStr(ip), port);
+    return NULL;
+  }
+
+  if (pConn->ip != ip || pConn->port != port /* || strcmp(pConn->user, user) != 0 */) {
+    mError("connId:%d, incoming conn user:%s ip:%s:%u, not match exist conn user:%s ip:%s:%u", connId, user,
+           taosIpStr(ip), port, pConn->user, taosIpStr(pConn->ip), pConn->port);
+    taosCacheRelease(tsMnodeConnCache, (void **)&pConn, false);
+    return NULL;
+  }
+
+  // mTrace("connId:%d, is incoming, user:%s ip:%s:%u", connId, pConn->user, taosIpStr(pConn->ip), pConn->port);
+  pConn->lastAccess = expireTime;
+  return pConn;
+}
+
+static void mnodeFreeConn(void *data) {
+  SConnObj *pConn = data;
+  tfree(pConn->pQueries);
+  tfree(pConn->pQueries);
+
+  mTrace("connId:%d, is destroyed", pConn->connId);
+}
 
+static void *mnodeGetNextConn(SHashMutableIterator *pIter, SConnObj **pConn) {
+  *pConn = NULL;
+
+  if (pIter == NULL) {
+    pIter = taosHashCreateIter(tsMnodeConnCache->pHashTable);
+  }
+
+  if (!taosHashIterNext(pIter)) {
+    taosHashDestroyIter(pIter);
+    return NULL;
+  }
+
+  SCacheDataNode **pNode = taosHashIterGet(pIter);
+  if (pNode == NULL || *pNode == NULL) {
+    taosHashDestroyIter(pIter);
+    return NULL;
+  }
+
+  *pConn = (SConnObj*)((*pNode)->data);
+  return pIter;
+}
+
+static int32_t mnodeGetConnsMeta(STableMetaMsg *pMeta, SShowObj *pShow, void *pConn) {
+  SUserObj *pUser = mnodeGetUserFromConn(pConn);
+  if (pUser == NULL) return 0;
+  if (strcmp(pUser->user, "root") != 0) return TSDB_CODE_NO_RIGHTS;
+  
+  int32_t cols = 0;
   SSchema *pSchema = pMeta->schema;
 
-  pShow->bytes[cols] = TSDB_USER_LEN;
+  pShow->bytes[cols] = 4;
+  pSchema[cols].type = TSDB_DATA_TYPE_INT;
+  strcpy(pSchema[cols].name, "connId");
+  pSchema[cols].bytes = htons(pShow->bytes[cols]);
+  cols++;
+
+  pShow->bytes[cols] = TSDB_USER_LEN + VARSTR_HEADER_SIZE;
   pSchema[cols].type = TSDB_DATA_TYPE_BINARY;
   strcpy(pSchema[cols].name, "user");
   pSchema[cols].bytes = htons(pShow->bytes[cols]);
   cols++;
 
-  pShow->bytes[cols] = TSDB_IPv4ADDR_LEN + 14;
+  pShow->bytes[cols] = TSDB_IPv4ADDR_LEN + 6 + VARSTR_HEADER_SIZE;
   pSchema[cols].type = TSDB_DATA_TYPE_BINARY;
-  strcpy(pSchema[cols].name, "ip:port:id");
+  strcpy(pSchema[cols].name, "ip:port");
   pSchema[cols].bytes = htons(pShow->bytes[cols]);
   cols++;
 
   pShow->bytes[cols] = 8;
   pSchema[cols].type = TSDB_DATA_TYPE_TIMESTAMP;
-  strcpy(pSchema[cols].name, "created_time");
+  strcpy(pSchema[cols].name, "login time");
   pSchema[cols].bytes = htons(pShow->bytes[cols]);
   cols++;
 
   pShow->bytes[cols] = 8;
-  pSchema[cols].type = TSDB_DATA_TYPE_BIGINT;
-  strcpy(pSchema[cols].name, "time(us)");
-  pSchema[cols].bytes = htons(pShow->bytes[cols]);
-  cols++;
-
-  pShow->bytes[cols] = TSDB_SHOW_SQL_LEN;
-  pSchema[cols].type = TSDB_DATA_TYPE_BINARY;
-  strcpy(pSchema[cols].name, "sql");
+  pSchema[cols].type = TSDB_DATA_TYPE_TIMESTAMP;
+  strcpy(pSchema[cols].name, "last access");
   pSchema[cols].bytes = htons(pShow->bytes[cols]);
   cols++;
 
@@ -186,314 +207,208 @@ int32_t mnodeGetQueryMeta(STableMetaMsg *pMeta, SShowObj *pShow, void *pConn) {
   pShow->numOfColumns = cols;
 
   pShow->offset[0] = 0;
-  for (int32_t i = 1; i < cols; ++i) pShow->offset[i] = pShow->offset[i - 1] + pShow->bytes[i - 1];
+  for (int32_t i = 1; i < cols; ++i) {
+    pShow->offset[i] = pShow->offset[i - 1] + pShow->bytes[i - 1];
+  }
 
-  pShow->numOfRows = 1000000;
-  pShow->pIter = NULL;
+  pShow->numOfRows = taosHashGetSize(tsMnodeConnCache->pHashTable);
   pShow->rowSize = pShow->offset[cols - 1] + pShow->bytes[cols - 1];
 
-  mnodeGetQueries(pShow, pConn);
   return 0;
 }
 
-int32_t mnodeKillQuery(char *qidstr, void *pConn) {
-//  char *temp, *chr, idstr[64];
-//  strcpy(idstr, qidstr);
-//
-//  temp = idstr;
-//  chr = strchr(temp, ':');
-//  if (chr == NULL) goto _error;
-//  *chr = 0;
-//  uint32_t ip = inet_addr(temp);
-//
-//  temp = chr + 1;
-//  chr = strchr(temp, ':');
-//  if (chr == NULL) goto _error;
-//  *chr = 0;
-//  uint16_t port = htons(atoi(temp));
-//
-//  temp = chr + 1;
-//  uint32_t queryId = atoi(temp);
-//
-//  SAcctObj *pAcct = pConn->pAcct;
-//
-//  pthread_mutex_lock(&pAcct->mutex);
-//
-//  pConn = pAcct->pConn;
-//  while (pConn) {
-//    if (pConn->ip == ip && pConn->port == port && pConn->pQList) {
-//      int32_t     i;
-//      SQueryDesc *pQDesc = pConn->pQList->qdesc;
-//      for (i = 0; i < pConn->pQList->numOfQueries; ++i, ++pQDesc) {
-//        if (pQDesc->queryId == queryId) break;
-//      }
-//
-//      if (i < pConn->pQList->numOfQueries) break;
-//    }
-//
-//    pConn = pConn->next;
-//  }
-//
-//  if (pConn) pConn->queryId = queryId;
-//
-//  pthread_mutex_unlock(&pAcct->mutex);
-//
-//  if (pConn == NULL || pConn->pQList == NULL || pConn->pQList->numOfQueries == 0) goto _error;
-//
-//  mTrace("query:%s is there, kill it", qidstr);
-//  return 0;
-//
-//_error:
-//  mTrace("query:%s is not there", qidstr);
-
-  return TSDB_CODE_INVALID_QUERY_ID;
-}
-
-int32_t mnodeRetrieveQueries(SShowObj *pShow, char *data, int32_t rows, void *pConn) {
+static int32_t mnodeRetrieveConns(SShowObj *pShow, char *data, int32_t rows, void *pConn) {
   int32_t   numOfRows = 0;
-  char *pWrite;
+  SConnObj *pConnObj = NULL;
   int32_t   cols = 0;
-
-  SQueryShow *pQueryShow = (SQueryShow *)pShow->pIter;
-
-  if (rows > pQueryShow->numOfQueries - pQueryShow->index) rows = pQueryShow->numOfQueries - pQueryShow->index;
+  char *    pWrite;
+  char      ipStr[TSDB_IPv4ADDR_LEN + 7];
 
   while (numOfRows < rows) {
-    SQueryDesc *pNode = pQueryShow->qdesc + pQueryShow->index;
-    SCDesc *pCDesc = pQueryShow->cdesc[pQueryShow->index];
+    pShow->pIter = mnodeGetNextConn(pShow->pIter, &pConnObj);
+    if (pConnObj == NULL) break;
+    
     cols = 0;
 
     pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
-    strcpy(pWrite, pCDesc->user);
+    *(int32_t *) pWrite = pConnObj->connId;
     cols++;
 
     pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
-    uint32_t ip = pCDesc->ip;
-    sprintf(pWrite, "%d.%d.%d.%d:%hu:%d", ip & 0xFF, (ip >> 8) & 0xFF, (ip >> 16) & 0xFF, ip >> 24, htons(pCDesc->port),
-            pNode->queryId);
+    STR_WITH_MAXSIZE_TO_VARSTR(pWrite, pConnObj->user, TSDB_USER_LEN);
     cols++;
 
     pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
-    *(int64_t *)pWrite = pNode->stime;
+    snprintf(ipStr, TSDB_IPv4ADDR_LEN + 6, "%s:%u", taosIpStr(pConnObj->ip), pConnObj->port);
+    STR_WITH_MAXSIZE_TO_VARSTR(pWrite, ipStr, TSDB_IPv4ADDR_LEN + 6);
     cols++;
 
     pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
-    *(int64_t *)pWrite = pNode->useconds;
+    *(int64_t *)pWrite = pConnObj->stime;
     cols++;
 
     pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
-    strcpy(pWrite, pNode->sql);
+    *(int64_t *)pWrite = pConnObj->lastAccess;
     cols++;
 
     numOfRows++;
-    pQueryShow->index++;
-  }
-
-  if (numOfRows == 0) {
-    tfree(pQueryShow->cdesc);
-    tfree(pQueryShow->connInfo);
-    tfree(pQueryShow);
   }
 
   pShow->numOfReads += numOfRows;
+  const int32_t NUM_OF_COLUMNS = 5;
+  mnodeVacuumResult(data, NUM_OF_COLUMNS, numOfRows, rows, pShow);
+  
   return numOfRows;
 }
 
-int32_t mnodeGetStreams(SShowObj *pShow, void *pConn) {
-//  SAcctObj *   pAcct = pConn->pAcct;
-//  SStreamShow *pStreamShow;
-//
-//  pthread_mutex_lock(&pAcct->mutex);
-//
-//  pStreamShow = malloc(sizeof(SStreamDesc) * pAcct->acctInfo.numOfStreams + sizeof(SQueryShow));
-//  pStreamShow->numOfStreams = 0;
-//  pStreamShow->index = 0;
-//  pStreamShow->connInfo = NULL;
-//  pStreamShow->cdesc = NULL;
-//
-//  if (pAcct->acctInfo.numOfStreams > 0) {
-//    pStreamShow->connInfo = (SCDesc *)malloc(pAcct->acctInfo.numOfConns * sizeof(SCDesc));
-//    pStreamShow->cdesc = (SCDesc **)malloc(pAcct->acctInfo.numOfStreams * sizeof(SCDesc *));
-//
-//    pConn = pAcct->pConn;
-//    SStreamDesc * pSdesc = pStreamShow->sdesc;
-//    SCDesc * pCDesc = pStreamShow->connInfo;
-//    SCDesc **ppCDesc = pStreamShow->cdesc;
-//
-//    while (pConn) {
-//      if (pConn->pSList && pConn->pSList->numOfStreams > 0) {
-//        pCDesc->ip = pConn->ip;
-//        pCDesc->port = pConn->port;
-//        strcpy(pCDesc->user, pConn->pUser->user);
-//
-//        memcpy(pSdesc, pConn->pSList->sdesc, sizeof(SStreamDesc) * pConn->pSList->numOfStreams);
-//        pSdesc += pConn->pSList->numOfStreams;
-//        pStreamShow->numOfStreams += pConn->pSList->numOfStreams;
-//        for (int32_t i = 0; i < pConn->pSList->numOfStreams; ++i, ++ppCDesc) *ppCDesc = pCDesc;
-//
-//        pCDesc++;
-//      }
-//      pConn = pConn->next;
-//    }
-//  }
-//
-//  pthread_mutex_unlock(&pAcct->mutex);
-//
-//  // sorting based on useconds
-//
-//  pShow->pIter = pStreamShow;
+// not thread safe, need optimized
+int32_t mnodeSaveQueryStreamList(SConnObj *pConn, SCMHeartBeatMsg *pHBMsg) {
+  pConn->numOfQueries = htonl(pHBMsg->numOfQueries);
+  if (pConn->numOfQueries > 0) {
+    pConn->pQueries = calloc(sizeof(SQueryDesc), pConn->numOfQueries);
+    memcpy(pConn->pQueries, pHBMsg->pData, pConn->numOfQueries * sizeof(SQueryDesc));
+  }
 
-  return 0;
+  pConn->numOfStreams = htonl(pHBMsg->numOfStreams);
+  if (pConn->numOfStreams > 0) {
+    pConn->pStreams = calloc(sizeof(SStreamDesc), pConn->numOfStreams);
+    memcpy(pConn->pStreams, pHBMsg->pData + pConn->numOfQueries * sizeof(SQueryDesc),
+           pConn->numOfStreams * sizeof(SStreamDesc));
+  }
+
+  return TSDB_CODE_SUCCESS;
 }
 
+static int32_t mnodeGetQueryMeta(STableMetaMsg *pMeta, SShowObj *pShow, void *pConn) {
+  SUserObj *pUser = mnodeGetUserFromConn(pConn);
+  if (pUser == NULL) return 0;
+  if (strcmp(pUser->user, "root") != 0) return TSDB_CODE_NO_RIGHTS;
 
-int32_t mnodeKillStream(char *qidstr, void *pConn) {
-//  char *temp, *chr, idstr[64];
-//  strcpy(idstr, qidstr);
-//
-//  temp = idstr;
-//  chr = strchr(temp, ':');
-//  if (chr == NULL) goto _error;
-//  *chr = 0;
-//  uint32_t ip = inet_addr(temp);
-//
-//  temp = chr + 1;
-//  chr = strchr(temp, ':');
-//  if (chr == NULL) goto _error;
-//  *chr = 0;
-//  uint16_t port = htons(atoi(temp));
-//
-//  temp = chr + 1;
-//  uint32_t streamId = atoi(temp);
-//
-//  SAcctObj *pAcct = pConn->pAcct;
-//
-//  pthread_mutex_lock(&pAcct->mutex);
-//
-//  pConn = pAcct->pConn;
-//  while (pConn) {
-//    if (pConn->ip == ip && pConn->port == port && pConn->pSList) {
-//      int32_t     i;
-//      SStreamDesc *pSDesc = pConn->pSList->sdesc;
-//      for (i = 0; i < pConn->pSList->numOfStreams; ++i, ++pSDesc) {
-//        if (pSDesc->streamId == streamId) break;
-//      }
-//
-//      if (i < pConn->pSList->numOfStreams) break;
-//    }
-//
-//    pConn = pConn->next;
-//  }
-//
-//  if (pConn) pConn->streamId = streamId;
-//
-//  pthread_mutex_unlock(&pAcct->mutex);
-//
-//  if (pConn == NULL || pConn->pSList == NULL || pConn->pSList->numOfStreams == 0) goto _error;
-//
-//  mTrace("stream:%s is there, kill it", qidstr);
-//  return 0;
-//
-//_error:
-//  mTrace("stream:%s is not there", qidstr);
-
-  return TSDB_CODE_INVALID_STREAM_ID;
-}
+  int32_t cols = 0;
+  SSchema *pSchema = pMeta->schema;
 
-int32_t mnodeKillConnection(char *qidstr, void *pConn) {
-//  void *pConn1 = NULL;
-//  char *    temp, *chr, idstr[64];
-//  strcpy(idstr, qidstr);
-//
-//  temp = idstr;
-//  chr = strchr(temp, ':');
-//  if (chr == NULL) goto _error;
-//  *chr = 0;
-//  uint32_t ip = inet_addr(temp);
-//
-//  temp = chr + 1;
-//  uint16_t port = htons(atoi(temp));
-//  SAcctObj *pAcct = pConn->pAcct;
-//
-//  pthread_mutex_lock(&pAcct->mutex);
-//
-//  pConn = pAcct->pConn;
-//  while (pConn) {
-//    if (pConn->ip == ip && pConn->port == port) {
-//      // there maybe two connections from a shell
-//      if (pConn1 == NULL)
-//        pConn1 = pConn;
-//      else
-//        break;
-//    }
-//
-//    pConn = pConn->next;
-//  }
-//
-//  if (pConn1) pConn1->killConnection = 1;
-//  if (pConn) pConn->killConnection = 1;
-//
-//  pthread_mutex_unlock(&pAcct->mutex);
-//
-//  if (pConn1 == NULL) goto _error;
-//
-//  mTrace("connection:%s is there, kill it", qidstr);
-//  return 0;
-//
-//_error:
-//  mTrace("connection:%s is not there", qidstr);
-
-  return TSDB_CODE_INVALID_CONNECTION;
-}
+  pShow->bytes[cols] = QUERY_ID_SIZE + VARSTR_HEADER_SIZE;
+  pSchema[cols].type = TSDB_DATA_TYPE_BINARY;
+  strcpy(pSchema[cols].name, "queryId");
+  pSchema[cols].bytes = htons(pShow->bytes[cols]);
+  cols++;
+
+  pShow->bytes[cols] = TSDB_USER_LEN + VARSTR_HEADER_SIZE;
+  pSchema[cols].type = TSDB_DATA_TYPE_BINARY;
+  strcpy(pSchema[cols].name, "user");
+  pSchema[cols].bytes = htons(pShow->bytes[cols]);
+  cols++;
+
+  pShow->bytes[cols] = TSDB_IPv4ADDR_LEN + 6 + VARSTR_HEADER_SIZE;
+  pSchema[cols].type = TSDB_DATA_TYPE_BINARY;
+  strcpy(pSchema[cols].name, "ip:port");
+  pSchema[cols].bytes = htons(pShow->bytes[cols]);
+  cols++;
+
+  pShow->bytes[cols] = 8;
+  pSchema[cols].type = TSDB_DATA_TYPE_TIMESTAMP;
+  strcpy(pSchema[cols].name, "created time");
+  pSchema[cols].bytes = htons(pShow->bytes[cols]);
+  cols++;
+
+  pShow->bytes[cols] = 8;
+  pSchema[cols].type = TSDB_DATA_TYPE_BIGINT;
+  strcpy(pSchema[cols].name, "time(us)");
+  pSchema[cols].bytes = htons(pShow->bytes[cols]);
+  cols++;
+
+  pShow->bytes[cols] = TSDB_SHOW_SQL_LEN + VARSTR_HEADER_SIZE;
+  pSchema[cols].type = TSDB_DATA_TYPE_BINARY;
+  strcpy(pSchema[cols].name, "sql");
+  pSchema[cols].bytes = htons(pShow->bytes[cols]);
+  cols++;
+
+  pMeta->numOfColumns = htons(cols);
+  pShow->numOfColumns = cols;
 
+  pShow->offset[0] = 0;
+  for (int32_t i = 1; i < cols; ++i) {
+    pShow->offset[i] = pShow->offset[i - 1] + pShow->bytes[i - 1];
+  }
 
-int mnodeGetConns(SShowObj *pShow, void *pConn) {
-  //  SAcctObj * pAcct = pConn->pAcct;
-  //  SConnShow *pConnShow;
-  //
-  //  pthread_mutex_lock(&pAcct->mutex);
-  //
-  //  pConnShow = malloc(sizeof(SConnInfo) * pAcct->acctInfo.numOfConns + sizeof(SConnShow));
-  //  pConnShow->index = 0;
-  //  pConnShow->numOfConns = 0;
-  //
-  //  if (pAcct->acctInfo.numOfConns > 0) {
-  //    pConn = pAcct->pConn;
-  //    SConnInfo *pConnInfo = pConnShow->connInfo;
-  //
-  //    while (pConn && pConn->pUser) {
-  //      strcpy(pConnInfo->user, pConn->pUser->user);
-  //      pConnInfo->ip = pConn->ip;
-  //      pConnInfo->port = pConn->port;
-  //      pConnInfo->stime = pConn->stime;
-  //
-  //      pConnShow->numOfConns++;
-  //      pConnInfo++;
-  //      pConn = pConn->next;
-  //    }
-  //  }
-  //
-  //  pthread_mutex_unlock(&pAcct->mutex);
-  //
-  //  // sorting based on useconds
-  //
-  //  pShow->pIter = pConnShow;
+  pShow->numOfRows = 1000000;
+  pShow->rowSize = pShow->offset[cols - 1] + pShow->bytes[cols - 1];
 
   return 0;
 }
 
-int32_t mnodeGetConnsMeta(STableMetaMsg *pMeta, SShowObj *pShow, void *pConn) {
-  int32_t cols = 0;
+static int32_t mnodeRetrieveQueries(SShowObj *pShow, char *data, int32_t rows, void *pConn) {
+  int32_t   numOfRows = 0;
+  SConnObj *pConnObj = NULL;
+  int32_t   cols = 0;
+  char *    pWrite;
+  char      ipStr[TSDB_IPv4ADDR_LEN + 7];
+
+  while (numOfRows < rows) {
+    pShow->pIter = mnodeGetNextConn(pShow->pIter, &pConnObj);
+    if (pConnObj == NULL) break;
+
+    for (int32_t i = 0; i < pConnObj->numOfQueries; ++i) {
+      SQueryDesc *pDesc = pConnObj->pQueries + i;
+      cols = 0;
+
+      snprintf(ipStr, QUERY_ID_SIZE + 1, "%u:%u", pConnObj->connId, htonl(pDesc->queryId));
+      pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
+      STR_WITH_MAXSIZE_TO_VARSTR(pWrite, ipStr, QUERY_ID_SIZE);
+      cols++;
+
+      pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
+      STR_WITH_MAXSIZE_TO_VARSTR(pWrite, pConnObj->user, TSDB_USER_LEN);
+      cols++;
+
+      pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
+      snprintf(ipStr, TSDB_IPv4ADDR_LEN + 6, "%s:%u", taosIpStr(pConnObj->ip), pConnObj->port);
+      STR_WITH_MAXSIZE_TO_VARSTR(pWrite, ipStr, TSDB_IPv4ADDR_LEN + 6);
+      cols++;
+
+      pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
+      *(int64_t *)pWrite = htobe64(pDesc->stime);
+      cols++;
+
+      pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
+      *(int64_t *)pWrite = htobe64(pDesc->useconds);
+      cols++;
+
+      pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
+      STR_WITH_MAXSIZE_TO_VARSTR(pWrite, pDesc->sql, TSDB_SHOW_SQL_LEN);
+      cols++;
 
-  pShow->bytes[cols] = TSDB_TABLE_NAME_LEN;
+      numOfRows++;
+    }
+  }
+
+  pShow->numOfReads += numOfRows;
+  const int32_t NUM_OF_COLUMNS = 6;
+  mnodeVacuumResult(data, NUM_OF_COLUMNS, numOfRows, rows, pShow);
+  return numOfRows;
+}
+
+static int32_t mnodeGetStreamMeta(STableMetaMsg *pMeta, SShowObj *pShow, void *pConn) {
+  SUserObj *pUser = mnodeGetUserFromConn(pConn);
+  if (pUser == NULL) return 0;
+  if (strcmp(pUser->user, "root") != 0) return TSDB_CODE_NO_RIGHTS;
+
+  int32_t cols = 0;
   SSchema *pSchema = pMeta->schema;
 
+  pShow->bytes[cols] = QUERY_ID_SIZE + VARSTR_HEADER_SIZE;
+  pSchema[cols].type = TSDB_DATA_TYPE_BINARY;
+  strcpy(pSchema[cols].name, "streamId");
+  pSchema[cols].bytes = htons(pShow->bytes[cols]);
+  cols++;
+
+  pShow->bytes[cols] = TSDB_USER_LEN + VARSTR_HEADER_SIZE;
   pSchema[cols].type = TSDB_DATA_TYPE_BINARY;
   strcpy(pSchema[cols].name, "user");
   pSchema[cols].bytes = htons(pShow->bytes[cols]);
   cols++;
 
-  pShow->bytes[cols] = TSDB_IPv4ADDR_LEN + 6;
+  pShow->bytes[cols] = TSDB_IPv4ADDR_LEN + 6 + VARSTR_HEADER_SIZE;
   pSchema[cols].type = TSDB_DATA_TYPE_BINARY;
   strcpy(pSchema[cols].name, "ip:port");
   pSchema[cols].bytes = htons(pShow->bytes[cols]);
@@ -501,7 +416,31 @@ int32_t mnodeGetConnsMeta(STableMetaMsg *pMeta, SShowObj *pShow, void *pConn) {
 
   pShow->bytes[cols] = 8;
   pSchema[cols].type = TSDB_DATA_TYPE_TIMESTAMP;
-  strcpy(pSchema[cols].name, "login time");
+  strcpy(pSchema[cols].name, "created time");
+  pSchema[cols].bytes = htons(pShow->bytes[cols]);
+  cols++;
+
+  pShow->bytes[cols] = 8;
+  pSchema[cols].type = TSDB_DATA_TYPE_TIMESTAMP;
+  strcpy(pSchema[cols].name, "exec time");
+  pSchema[cols].bytes = htons(pShow->bytes[cols]);
+  cols++;
+
+  pShow->bytes[cols] = 8;
+  pSchema[cols].type = TSDB_DATA_TYPE_BIGINT;
+  strcpy(pSchema[cols].name, "time(us)");
+  pSchema[cols].bytes = htons(pShow->bytes[cols]);
+  cols++;
+
+  pShow->bytes[cols] = TSDB_SHOW_SQL_LEN + VARSTR_HEADER_SIZE;
+  pSchema[cols].type = TSDB_DATA_TYPE_BINARY;
+  strcpy(pSchema[cols].name, "sql");
+  pSchema[cols].bytes = htons(pShow->bytes[cols]);
+  cols++;
+
+  pShow->bytes[cols] = 4;
+  pSchema[cols].type = TSDB_DATA_TYPE_INT;
+  strcpy(pSchema[cols].name, "cycles");
   pSchema[cols].bytes = htons(pShow->bytes[cols]);
   cols++;
 
@@ -509,140 +448,148 @@ int32_t mnodeGetConnsMeta(STableMetaMsg *pMeta, SShowObj *pShow, void *pConn) {
   pShow->numOfColumns = cols;
 
   pShow->offset[0] = 0;
-  for (int i = 1; i < cols; ++i) pShow->offset[i] = pShow->offset[i - 1] + pShow->bytes[i - 1];
+  for (int32_t i = 1; i < cols; ++i) {
+    pShow->offset[i] = pShow->offset[i - 1] + pShow->bytes[i - 1];
+  }
 
   pShow->numOfRows = 1000000;
-  pShow->pIter = NULL;
   pShow->rowSize = pShow->offset[cols - 1] + pShow->bytes[cols - 1];
 
-  mnodeGetConns(pShow, pConn);
   return 0;
 }
 
-int32_t mnodeRetrieveConns(SShowObj *pShow, char *data, int32_t rows, void *pConn) {
+static int32_t mnodeRetrieveStreams(SShowObj *pShow, char *data, int32_t rows, void *pConn) {
   int32_t   numOfRows = 0;
-  char      *pWrite;
+  SConnObj *pConnObj = NULL;
   int32_t   cols = 0;
+  char *    pWrite;
+  char      ipStr[TSDB_IPv4ADDR_LEN + 7];
 
-  SConnShow *pConnShow = (SConnShow *)pShow->pIter;
+  while (numOfRows < rows) {
+    pShow->pIter = mnodeGetNextConn(pShow->pIter, &pConnObj);
+    if (pConnObj == NULL) break;
 
-  if (rows > pConnShow->numOfConns - pConnShow->index) rows = pConnShow->numOfConns - pConnShow->index;
+    for (int32_t i = 0; i < pConnObj->numOfStreams; ++i) {
+      SStreamDesc *pDesc = pConnObj->pStreams + i;
+      cols = 0;
 
-  while (numOfRows < rows) {
-    SConnInfo *pNode = pConnShow->connInfo + pConnShow->index;
-    cols = 0;
+      snprintf(ipStr, QUERY_ID_SIZE + 1, "%u:%u", pConnObj->connId, htonl(pDesc->streamId));
+      pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
+      STR_WITH_MAXSIZE_TO_VARSTR(pWrite, ipStr, QUERY_ID_SIZE);
+      cols++;
 
-    pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
-    strcpy(pWrite, pNode->user);
-    cols++;
+      pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
+      STR_WITH_MAXSIZE_TO_VARSTR(pWrite, pConnObj->user, TSDB_USER_LEN);
+      cols++;
 
-    pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
-    uint32_t ip = pNode->ip;
-    sprintf(pWrite, "%d.%d.%d.%d:%hu", ip & 0xFF, (ip >> 8) & 0xFF, (ip >> 16) & 0xFF, ip >> 24, htons(pNode->port));
-    cols++;
+      pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
+      snprintf(ipStr, TSDB_IPv4ADDR_LEN + 6, "%s:%u", taosIpStr(pConnObj->ip), pConnObj->port);
+      STR_WITH_MAXSIZE_TO_VARSTR(pWrite, ipStr, TSDB_IPv4ADDR_LEN + 6);
+      cols++;
 
-    pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
-    *(int64_t *)pWrite = pNode->stime;
-    cols++;
+      pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
+      *(int64_t *)pWrite = htobe64(pDesc->ctime);
+      cols++;
 
-    numOfRows++;
-    pConnShow->index++;
-  }
+      pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
+      *(int64_t *)pWrite = htobe64(pDesc->stime);
+      cols++;
+
+      pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
+      *(int64_t *)pWrite = htobe64(pDesc->useconds);
+      cols++;
 
-  if (numOfRows == 0) {
-    tfree(pConnShow);
+      pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
+      STR_WITH_MAXSIZE_TO_VARSTR(pWrite, pDesc->sql, TSDB_SHOW_SQL_LEN);
+      cols++;
+
+      pWrite = data + pShow->offset[cols] * rows + pShow->bytes[cols] * numOfRows;
+      *(int32_t *)pWrite = (int32_t)htobe64(pDesc->num);
+      cols++;
+
+      numOfRows++;
+    }
   }
 
   pShow->numOfReads += numOfRows;
+  const int32_t NUM_OF_COLUMNS = 8;
+  mnodeVacuumResult(data, NUM_OF_COLUMNS, numOfRows, rows, pShow);
   return numOfRows;
 }
 
-int32_t mnodeProcessKillQueryMsg(SMnodeMsg *pMsg) {
-  // SRpcMsg rpcRsp = {.handle = pMsg->thandle, .pCont = NULL, .contLen = 0, .code = 0, .msgType = 0};
-  
-  // SUserObj *pUser = mnodeGetUserFromConn(pMsg->thandle);
-  // if (pUser == NULL) {
-  //   rpcRsp.code = TSDB_CODE_INVALID_USER;
-  //   rpcSendResponse(&rpcRsp);
-  //   return;
-  // }
-
-  // SCMKillQueryMsg *pKill = pMsg->pCont;
-  // int32_t code;
-
-  // if (!pUser->writeAuth) {
-  //   code = TSDB_CODE_NO_RIGHTS;
-  // } else {
-  //   code = mgmtKillQuery(pKill->queryId, pMsg->thandle);
-  // }
-
-  // rpcRsp.code = code;
-  // rpcSendResponse(&rpcRsp);
-  // mnodeDecUserRef(pUser);
-  return TSDB_CODE_SUCCESS;
-}
+static int32_t mnodeProcessKillQueryMsg(SMnodeMsg *pMsg) {
+  SUserObj *pUser = pMsg->pUser;
+  if (strcmp(pUser->user, "root") != 0) return TSDB_CODE_NO_RIGHTS;
 
-int32_t mnodeProcessKillStreamMsg(SMnodeMsg *pMsg) {
-  // SRpcMsg rpcRsp = {.handle = pMsg->thandle, .pCont = NULL, .contLen = 0, .code = 0, .msgType = 0};
-  
-  // SUserObj *pUser = mnodeGetUserFromConn(pMsg->thandle);
-  // if (pUser == NULL) {
-  //   rpcRsp.code = TSDB_CODE_INVALID_USER;
-  //   rpcSendResponse(&rpcRsp);
-  //   return;
-  // }
-
-  // SCMKillStreamMsg *pKill = pMsg->pCont;
-  // int32_t code;
-
-  // if (!pUser->writeAuth) {
-  //   code = TSDB_CODE_NO_RIGHTS;
-  // } else {
-  //   code = mgmtKillStream(pKill->queryId, pMsg->thandle);
-  // }
-
-  // rpcRsp.code = code;
-  // rpcSendResponse(&rpcRsp);
-  // mnodeDecUserRef(pUser);
-  return TSDB_CODE_SUCCESS;
-}
+  SCMKillQueryMsg *pKill = pMsg->rpcMsg.pCont;
+  mPrint("kill query msg is received, queryId:%s", pKill->queryId);
 
-int32_t mnodeProcessKillConnectionMsg(SMnodeMsg *pMsg) {
-  // SRpcMsg rpcRsp = {.handle = pMsg->thandle, .pCont = NULL, .contLen = 0, .code = 0, .msgType = 0};
-  
-  // SUserObj *pUser = mnodeGetUserFromConn(pMsg->thandle);
-  // if (pUser == NULL) {
-  //   rpcRsp.code = TSDB_CODE_INVALID_USER;
-  //   rpcSendResponse(&rpcRsp);
-  //   return;
-  // }
-
-  // SCMKillConnMsg *pKill = pMsg->pCont;
-  // int32_t code;
-
-  // if (!pUser->writeAuth) {
-  //   code = TSDB_CODE_NO_RIGHTS;
-  // } else {
-  //   code = mgmtKillConnection(pKill->queryId, pMsg->thandle);
-  // }
-
-  // rpcRsp.code = code;
-  // rpcSendResponse(&rpcRsp);
-  // mnodeDecUserRef(pUser);
-  return TSDB_CODE_SUCCESS;
+  const char delim = ':';
+  char* connIdStr = strtok(pKill->queryId, &delim);
+  char* queryIdStr = strtok(NULL, &delim);
+
+  if (queryIdStr == NULL || connIdStr == NULL) {
+    mPrint("failed to kill query, queryId:%s", pKill->queryId);
+   return TSDB_CODE_INVALID_QUERY_ID;
+  }
+
+  int32_t queryId = (int32_t)strtol(queryIdStr, NULL, 10);
+
+  SConnObj *pConn = taosCacheAcquireByName(tsMnodeConnCache, connIdStr);
+  if (pConn == NULL) {
+    mError("connId:%s, failed to kill queryId:%d, conn not exist", connIdStr, queryId);
+    return TSDB_CODE_INVALID_CONNECTION;
+  } else {
+    mPrint("connId:%s, queryId:%d is killed by user:%s", connIdStr, queryId, pUser->user);
+    pConn->queryId = queryId;
+    taosCacheRelease(tsMnodeConnCache, (void **)&pConn, false);
+    return TSDB_CODE_SUCCESS;
+  }
 }
 
-int32_t mnodeInitProfile() {
-  // mnodeAddShowMetaHandle(TSDB_MGMT_TABLE_QUERIES, mnodeGetQueryMeta);
-  // mnodeAddShowRetrieveHandle(TSDB_MGMT_TABLE_QUERIES, mnodeRetrieveQueries);
-  // mnodeAddShowMetaHandle(TSDB_MGMT_TABLE_CONNS, mnodeGetConnsMeta);
-  // mnodeAddShowRetrieveHandle(TSDB_MGMT_TABLE_CONNS, mnodeRetrieveConns);
+static int32_t mnodeProcessKillStreamMsg(SMnodeMsg *pMsg) {
+  SUserObj *pUser = pMsg->pUser;
+  if (strcmp(pUser->user, "root") != 0) return TSDB_CODE_NO_RIGHTS;
 
-  // mnodeAddWriteMsgHandle(TSDB_MSG_TYPE_CM_KILL_QUERY, mnodeProcessKillQueryMsg);
-  // mnodeAddWriteMsgHandle(TSDB_MSG_TYPE_CM_KILL_STREAM, mnodeProcessKillStreamMsg);
-  // mnodeAddWriteMsgHandle(TSDB_MSG_TYPE_CM_KILL_CONN, mnodeProcessKillConnectionMsg);
+  SCMKillQueryMsg *pKill = pMsg->rpcMsg.pCont;
+  mPrint("kill stream msg is received, streamId:%s", pKill->queryId);
 
-  return 0;
+  const char delim = ':';
+  char* connIdStr = strtok(pKill->queryId, &delim);
+  char* streamIdStr = strtok(NULL, &delim);
+
+  if (streamIdStr == NULL || connIdStr == NULL) {
+    mPrint("failed to kill stream, streamId:%s", pKill->queryId);
+   return TSDB_CODE_INVALID_STREAM_ID;
+  }
+
+  int32_t streamId = (int32_t)strtol(streamIdStr, NULL, 10);
+
+  SConnObj *pConn = taosCacheAcquireByName(tsMnodeConnCache, connIdStr);
+  if (pConn == NULL) {
+    mError("connId:%s, failed to kill streamId:%d, conn not exist", connIdStr, streamId);
+    return TSDB_CODE_INVALID_CONNECTION;
+  } else {
+    mPrint("connId:%s, streamId:%d is killed by user:%s", connIdStr, streamId, pUser->user);
+    pConn->streamId = streamId;
+    taosCacheRelease(tsMnodeConnCache, (void **)&pConn, false);
+    return TSDB_CODE_SUCCESS;
+  }
 }
 
-void mnodeCleanupProfile() {}
+static int32_t mnodeProcessKillConnectionMsg(SMnodeMsg *pMsg) {
+  SUserObj *pUser = pMsg->pUser;
+  if (strcmp(pUser->user, "root") != 0) return TSDB_CODE_NO_RIGHTS;
+
+  SCMKillConnMsg *pKill = pMsg->rpcMsg.pCont;
+  SConnObj *      pConn = taosCacheAcquireByName(tsMnodeConnCache, pKill->queryId);
+  if (pConn == NULL) {
+    mError("connId:%s, failed to kill, conn not exist", pKill->queryId);
+    return TSDB_CODE_INVALID_CONNECTION;
+  } else {
+    mPrint("connId:%s, is killed by user:%s", pKill->queryId, pUser->user);
+    pConn->killed = 1;
+    taosCacheRelease(tsMnodeConnCache, (void**)&pConn, false);
+    return TSDB_CODE_SUCCESS;
+  }
+}
diff --git a/src/mnode/src/mnodeShow.c b/src/mnode/src/mnodeShow.c
index dd6de9d351d9864e800fda6b917c297ef9c803ff..c1edd309c824337e08f4f950375f5f7b299eb6ca 100644
--- a/src/mnode/src/mnodeShow.c
+++ b/src/mnode/src/mnodeShow.c
@@ -227,21 +227,47 @@ static int32_t mnodeProcessHeartBeatMsg(SMnodeMsg *pMsg) {
     return TSDB_CODE_SERV_OUT_OF_MEMORY;
   }
 
+  SCMHeartBeatMsg *pHBMsg = pMsg->rpcMsg.pCont;
+  SRpcConnInfo connInfo;
+  rpcGetConnInfo(pMsg->rpcMsg.handle, &connInfo);
+    
+  int32_t connId = htonl(pHBMsg->connId);
+  SConnObj *pConn = mnodeAccquireConn(connId, connInfo.user, connInfo.clientIp, connInfo.clientPort);
+  if (pConn == NULL) {
+    pConn = mnodeCreateConn(connInfo.user, connInfo.clientIp, connInfo.clientPort);
+  }
+
+  if (pConn == NULL) {
+    // do not close existing links, otherwise
+    // mError("failed to create connId, close connect");
+    // pHBRsp->killConnection = 1;
+  } else {
+    pHBRsp->connId = htonl(pConn->connId);
+    mnodeSaveQueryStreamList(pConn, pHBMsg);
+    
+    if (pConn->killed != 0) {
+      pHBRsp->killConnection = 1;
+    }
+
+    if (pConn->streamId != 0) {
+      pHBRsp->streamId = htonl(pConn->streamId);
+      pConn->streamId = 0;
+    }
+
+    if (pConn->queryId != 0) {
+      pHBRsp->queryId = htonl(pConn->queryId);
+      pConn->queryId = 0;
+    }
+  }
+
   pHBRsp->onlineDnodes = htonl(mnodeGetOnlinDnodesNum());
   pHBRsp->totalDnodes = htonl(mnodeGetDnodesNum());
   mnodeGetMnodeIpSetForShell(&pHBRsp->ipList);
-  
-  /*
-   * TODO
-   * Dispose kill stream or kill query message
-   */
-  pHBRsp->queryId = 0;
-  pHBRsp->streamId = 0;
-  pHBRsp->killConnection = 0;
 
   pMsg->rpcRsp.rsp = pHBRsp;
   pMsg->rpcRsp.len = sizeof(SCMHeartBeatRsp);
   
+  mnodeReleaseConn(pConn);
   return TSDB_CODE_SUCCESS;
 }
 
@@ -281,11 +307,19 @@ static int32_t mnodeProcessConnectMsg(SMnodeMsg *pMsg) {
     goto connect_over;
   }
 
+  SConnObj *pConn = mnodeCreateConn(connInfo.user, connInfo.clientIp, connInfo.clientPort);
+  if (pConn == NULL) {
+    code = terrno;
+  } else {
+    pConnectRsp->connId = htonl(pConn->connId);
+    mnodeReleaseConn(pConn);
+  }
+
   sprintf(pConnectRsp->acctId, "%x", pAcct->acctId);
   strcpy(pConnectRsp->serverVersion, version);
   pConnectRsp->writeAuth = pUser->writeAuth;
   pConnectRsp->superAuth = pUser->superAuth;
-
+  
   mnodeGetMnodeIpSetForShell(&pConnectRsp->ipList);
 
 connect_over:
@@ -358,3 +392,11 @@ static void mnodeReleaseShowObj(void *pShow, bool forceRemove) {
   mTrace("%p, show is released, force:%s", pShow, forceRemove ? "true" : "false");
   taosCacheRelease(tsMnodeShowCache, &pShow, forceRemove);
 }
+
+void mnodeVacuumResult(char *data, int32_t numOfCols, int32_t rows, int32_t capacity, SShowObj *pShow) {
+  if (rows < capacity) {
+    for (int32_t i = 0; i < numOfCols; ++i) {
+      memmove(data + pShow->offset[i] * rows, data + pShow->offset[i] * capacity, pShow->bytes[i] * rows);
+    }
+  }
+}
\ No newline at end of file
diff --git a/src/mnode/src/mnodeTable.c b/src/mnode/src/mnodeTable.c
index 196056b47471b3213a417595017c5ad5405e6373..56592aff4b61af17bd8a6261724da619c5fe3f7b 100644
--- a/src/mnode/src/mnodeTable.c
+++ b/src/mnode/src/mnodeTable.c
@@ -61,8 +61,8 @@ static int32_t mnodeGetShowTableMeta(STableMetaMsg *pMeta, SShowObj *pShow, void
 static int32_t mnodeRetrieveShowTables(SShowObj *pShow, char *data, int32_t rows, void *pConn);
 static int32_t mnodeGetShowSuperTableMeta(STableMetaMsg *pMeta, SShowObj *pShow, void *pConn);
 static int32_t mnodeRetrieveShowSuperTables(SShowObj *pShow, char *data, int32_t rows, void *pConn);
-static int32_t mnodeGetStreamMeta(STableMetaMsg *pMeta, SShowObj *pShow, void *pConn);
-static int32_t mnodeRetrieveStreams(SShowObj *pShow, char *data, int32_t rows, void *pConn);
+static int32_t mnodeGetStreamTableMeta(STableMetaMsg *pMeta, SShowObj *pShow, void *pConn);
+static int32_t mnodeRetrieveStreamTables(SShowObj *pShow, char *data, int32_t rows, void *pConn);
  
 static int32_t mnodeProcessCreateTableMsg(SMnodeMsg *mnodeMsg);
 static int32_t mnodeProcessCreateSuperTableMsg(SMnodeMsg *pMsg);
@@ -568,8 +568,8 @@ int32_t mnodeInitTables() {
   mnodeAddShowRetrieveHandle(TSDB_MGMT_TABLE_TABLE, mnodeRetrieveShowTables);
   mnodeAddShowMetaHandle(TSDB_MGMT_TABLE_METRIC, mnodeGetShowSuperTableMeta);
   mnodeAddShowRetrieveHandle(TSDB_MGMT_TABLE_METRIC, mnodeRetrieveShowSuperTables);
-  mnodeAddShowMetaHandle(TSDB_MGMT_TABLE_STREAMS, mnodeGetStreamMeta);
-  mnodeAddShowRetrieveHandle(TSDB_MGMT_TABLE_STREAMS, mnodeRetrieveStreams);
+  mnodeAddShowMetaHandle(TSDB_MGMT_TABLE_STREAMTABLES, mnodeGetStreamTableMeta);
+  mnodeAddShowRetrieveHandle(TSDB_MGMT_TABLE_STREAMTABLES, mnodeRetrieveStreamTables);
 
   return TSDB_CODE_SUCCESS;
 }
@@ -2111,14 +2111,6 @@ static int32_t mnodeGetShowTableMeta(STableMetaMsg *pMeta, SShowObj *pShow, void
   return 0;
 }
 
-static void mnodeVacuumResult(char *data, int32_t numOfCols, int32_t rows, int32_t capacity, SShowObj *pShow) {
-  if (rows < capacity) {
-    for (int32_t i = 0; i < numOfCols; ++i) {
-      memmove(data + pShow->offset[i] * rows, data + pShow->offset[i] * capacity, pShow->bytes[i] * rows);
-    }
-  }
-}
-
 static int32_t mnodeRetrieveShowTables(SShowObj *pShow, char *data, int32_t rows, void *pConn) {
   SDbObj *pDb = mnodeGetDb(pShow->db);
   if (pDb == NULL) return 0;
@@ -2262,7 +2254,7 @@ static int32_t mnodeProcessAlterTableMsg(SMnodeMsg *pMsg) {
   return code;
 }
 
-static int32_t mnodeGetStreamMeta(STableMetaMsg *pMeta, SShowObj *pShow, void *pConn) {
+static int32_t mnodeGetStreamTableMeta(STableMetaMsg *pMeta, SShowObj *pShow, void *pConn) {
   SDbObj *pDb = mnodeGetDb(pShow->db);
   if (pDb == NULL) return TSDB_CODE_DB_NOT_SELECTED;
 
@@ -2308,7 +2300,7 @@ static int32_t mnodeGetStreamMeta(STableMetaMsg *pMeta, SShowObj *pShow, void *p
   return 0;
 }
 
-static int32_t mnodeRetrieveStreams(SShowObj *pShow, char *data, int32_t rows, void *pConn) {
+static int32_t mnodeRetrieveStreamTables(SShowObj *pShow, char *data, int32_t rows, void *pConn) {
   SDbObj *pDb = mnodeGetDb(pShow->db);
   if (pDb == NULL) return 0;
 
diff --git a/src/plugins/monitor/src/monitorMain.c b/src/plugins/monitor/src/monitorMain.c
index 0c27233289ce054625e3512374748206f54176df..5275dd9d6c2552bbe4994b29da1c28583723be66 100644
--- a/src/plugins/monitor/src/monitorMain.c
+++ b/src/plugins/monitor/src/monitorMain.c
@@ -183,7 +183,7 @@ static void dnodeBuildMonitorSql(char *sql, int32_t cmd) {
     snprintf(sql, SQL_LENGTH,
              "create table if not exists %s.slowquery(ts timestamp, username "
              "binary(%d), created_time timestamp, time bigint, sql binary(%d))",
-             tsMonitorDbName, TSDB_TABLE_ID_LEN, TSDB_SHOW_SQL_LEN);
+             tsMonitorDbName, TSDB_TABLE_ID_LEN, TSDB_SLOW_QUERY_SQL_LEN);
   } else if (cmd == MONITOR_CMD_CREATE_TB_LOG) {
     snprintf(sql, SQL_LENGTH,
              "create table if not exists %s.log(ts timestamp, level tinyint, "
diff --git a/src/query/src/sql.c b/src/query/src/sql.c
index d079e5a24ed7be23a3c2163d0557be49b9f9f7cc..545cef408216e597b1f48e6e6da0968baaf7983c 100644
--- a/src/query/src/sql.c
+++ b/src/query/src/sql.c
@@ -126,17 +126,17 @@ typedef union {
 #define ParseARG_FETCH SSqlInfo* pInfo = yypParser->pInfo
 #define ParseARG_STORE yypParser->pInfo = pInfo
 #define YYFALLBACK 1
-#define YYNSTATE             247
+#define YYNSTATE             241
 #define YYNRULE              220
 #define YYNTOKEN             205
-#define YY_MAX_SHIFT         246
-#define YY_MIN_SHIFTREDUCE   403
-#define YY_MAX_SHIFTREDUCE   622
-#define YY_ERROR_ACTION      623
-#define YY_ACCEPT_ACTION     624
-#define YY_NO_ACTION         625
-#define YY_MIN_REDUCE        626
-#define YY_MAX_REDUCE        845
+#define YY_MAX_SHIFT         240
+#define YY_MIN_SHIFTREDUCE   397
+#define YY_MAX_SHIFTREDUCE   616
+#define YY_ERROR_ACTION      617
+#define YY_ACCEPT_ACTION     618
+#define YY_NO_ACTION         619
+#define YY_MIN_REDUCE        620
+#define YY_MAX_REDUCE        839
 /************* End control #defines *******************************************/
 
 /* Define the yytestcase() macro to be a no-op if is not already defined
@@ -202,63 +202,63 @@ typedef union {
 **  yy_default[]       Default action for each state.
 **
 *********** Begin parsing tables **********************************************/
-#define YY_ACTTAB_COUNT (547)
+#define YY_ACTTAB_COUNT (541)
 static const YYACTIONTYPE yy_action[] = {
- /*     0 */   724,  444,  723,   11,  722,  134,  624,  246,  725,  445,
- /*    10 */   727,  726,  764,   41,   43,   21,   35,   36,  153,  244,
- /*    20 */   135,   29,  135,  444,  203,   39,   37,   40,   38,  158,
- /*    30 */   833,  445,  832,   34,   33,  139,  135,   32,   31,   30,
- /*    40 */    41,   43,  753,   35,   36,  157,  833,  166,   29,  739,
- /*    50 */   103,  203,   39,   37,   40,   38,  188,   21,  103,   99,
- /*    60 */    34,   33,  761,  155,   32,   31,   30,  404,  405,  406,
- /*    70 */   407,  408,  409,  410,  411,  412,  413,  414,  415,  245,
- /*    80 */   444,  742,   41,   43,  103,   35,   36,  103,  445,  168,
- /*    90 */    29,  738,   21,  203,   39,   37,   40,   38,   32,   31,
- /*   100 */    30,   56,   34,   33,  753,  787,   32,   31,   30,   43,
- /*   110 */   191,   35,   36,  788,  829,  198,   29,   21,  154,  203,
- /*   120 */    39,   37,   40,   38,  167,  578,  739,    8,   34,   33,
- /*   130 */    61,  113,   32,   31,   30,  665,   35,   36,  126,   59,
- /*   140 */   200,   29,   58,   17,  203,   39,   37,   40,   38,  221,
- /*   150 */    26,  739,  169,   34,   33,  220,  219,   32,   31,   30,
- /*   160 */    16,  239,  214,  238,  213,  212,  211,  237,  210,  236,
- /*   170 */   235,  209,  720,  828,  709,  710,  711,  712,  713,  714,
- /*   180 */   715,  716,  717,  718,  719,  162,  591,  234,   76,  582,
- /*   190 */   165,  585,  240,  588,  234,  162,  591,   98,  827,  582,
- /*   200 */   225,  585,   60,  588,   26,  162,  591,   12,  742,  582,
- /*   210 */   742,  585,  674,  588,   27,  126,   21,  159,  160,   34,
- /*   220 */    33,  202,  842,   32,   31,   30,  148,  159,  160,  740,
- /*   230 */   536,  539,   88,   87,  142,   18,  666,  159,  160,  126,
- /*   240 */   147,  559,  560,   39,   37,   40,   38,   50,  226,  550,
- /*   250 */   739,   34,   33,   46,  507,   32,   31,   30,  523,  531,
- /*   260 */    17,  520,  151,  521,   51,  522,  190,   26,   16,  239,
- /*   270 */   152,  238,  243,  242,   95,  237,  551,  236,  235,  177,
- /*   280 */    14,   42,  223,  222,  580,  741,  185,  187,  182,  170,
- /*   290 */   171,   42,  590,  584,  150,  587,   74,   78,   83,   86,
- /*   300 */    77,   42,  590,  161,  608,  592,   80,  589,   13,   13,
- /*   310 */   140,  583,  590,  586,  513,   47,  141,  589,   46,  798,
- /*   320 */   581,  116,  117,   68,   64,   67,  143,  589,  130,  128,
- /*   330 */    91,   90,   89,  512,   48,  207,  527,   22,  528,   22,
- /*   340 */   144,    3,   73,   72,   10,    9,  145,  525,  146,  526,
- /*   350 */    85,   84,  137,  797,  133,  138,  136,  163,  794,  524,
- /*   360 */   793,  164,  763,  733,  224,  100,  755,  780,  779,  114,
- /*   370 */    26,  115,  112,  676,  208,  131,   24,  217,  673,  218,
- /*   380 */   841,   70,  840,  838,  118,  694,   25,   93,   23,  132,
- /*   390 */   663,   79,  189,  546,  661,  192,   81,   82,  659,  658,
- /*   400 */   172,  127,  656,  196,  655,  654,  653,  652,  644,  129,
- /*   410 */   650,  648,  646,   52,  752,  767,   49,   44,  768,  781,
- /*   420 */   201,  199,  197,  195,  193,   28,  216,   75,  227,  228,
- /*   430 */   229,  230,  205,  232,  231,   53,  233,  241,  622,  149,
- /*   440 */   173,   62,   65,  174,  176,  175,  621,  178,  179,  180,
- /*   450 */   181,  657,  121,  120,  695,  125,  119,  122,  123,   92,
- /*   460 */   124,  651,    1,  106,  104,  737,   94,  105,  620,  109,
- /*   470 */   107,  108,  110,  111,    2,  184,  613,  183,  186,  190,
- /*   480 */   533,   55,  547,  156,  101,   57,  552,  194,  102,    5,
- /*   490 */     6,   63,  484,  593,    4,   19,   20,   15,  204,    7,
- /*   500 */   206,  481,  479,  478,  477,  475,  448,  215,   66,   45,
- /*   510 */    22,  509,  508,   69,  506,   54,  469,  467,  459,  465,
- /*   520 */   461,  463,  457,  455,   71,  483,  482,  480,  476,  474,
- /*   530 */    46,  446,  419,  417,  626,  625,  625,  625,  625,  625,
- /*   540 */    96,  625,  625,  625,  625,  625,   97,
+ /*     0 */   718,  438,  717,   11,  716,  134,  618,  240,  719,  439,
+ /*    10 */   721,  720,  758,   41,   43,   21,   35,   36,  153,  238,
+ /*    20 */   135,   29,  135,  438,  197,   39,   37,   40,   38,  158,
+ /*    30 */   827,  439,  826,   34,   33,  139,  135,   32,   31,   30,
+ /*    40 */    41,   43,  747,   35,   36,  157,  827,  166,   29,  733,
+ /*    50 */   103,  197,   39,   37,   40,   38,  182,   21,  103,   99,
+ /*    60 */    34,   33,  755,  155,   32,   31,   30,  398,  399,  400,
+ /*    70 */   401,  402,  403,  404,  405,  406,  407,  408,  409,  239,
+ /*    80 */   438,  736,   41,   43,  103,   35,   36,  103,  439,  168,
+ /*    90 */    29,  732,   21,  197,   39,   37,   40,   38,   32,   31,
+ /*   100 */    30,   56,   34,   33,  747,  781,   32,   31,   30,   43,
+ /*   110 */   185,   35,   36,  782,  823,  192,   29,   21,  154,  197,
+ /*   120 */    39,   37,   40,   38,  167,  572,  733,    8,   34,   33,
+ /*   130 */    61,  113,   32,   31,   30,  659,   35,   36,  126,   59,
+ /*   140 */   194,   29,   58,   17,  197,   39,   37,   40,   38,  215,
+ /*   150 */    26,  733,  169,   34,   33,  214,  213,   32,   31,   30,
+ /*   160 */    16,  233,  208,  232,  207,  206,  205,  231,  204,  230,
+ /*   170 */   229,  203,  714,  219,  703,  704,  705,  706,  707,  708,
+ /*   180 */   709,  710,  711,  712,  713,  162,  585,   50,   60,  576,
+ /*   190 */   175,  579,  165,  582,  234,  162,  585,  179,  178,  576,
+ /*   200 */    27,  579,  734,  582,   51,  162,  585,   12,   98,  576,
+ /*   210 */   736,  579,  736,  582,  228,   26,   21,  159,  160,   34,
+ /*   220 */    33,  196,  836,   32,   31,   30,  148,  159,  160,   76,
+ /*   230 */   822,  533,   88,   87,  142,  228,  668,  159,  160,  126,
+ /*   240 */   147,  553,  554,   39,   37,   40,   38,  821,  220,  544,
+ /*   250 */   733,   34,   33,   46,  501,   32,   31,   30,  517,  525,
+ /*   260 */    17,  514,  151,  515,  152,  516,  184,   26,   16,  233,
+ /*   270 */   140,  232,  237,  236,   95,  231,  660,  230,  229,  126,
+ /*   280 */   530,   42,  217,  216,  578,   18,  581,  181,  161,  170,
+ /*   290 */   171,   42,  584,  577,  150,  580,   74,   78,   83,   86,
+ /*   300 */    77,   42,  584,  574,  545,  602,   80,  583,   14,   13,
+ /*   310 */   141,  586,  584,  143,  507,   13,   47,  583,   46,   73,
+ /*   320 */    72,  116,  117,   68,   64,   67,    3,  583,  130,  128,
+ /*   330 */    91,   90,   89,  506,  201,   48,  144,   22,   22,  575,
+ /*   340 */   521,  519,  522,  520,   10,    9,   85,   84,  145,  146,
+ /*   350 */   137,  133,  138,  735,  136,  792,  791,  163,  788,  518,
+ /*   360 */   787,  164,  757,  727,  218,  100,  749,  774,  773,  114,
+ /*   370 */    26,  115,  112,  670,  202,  131,   24,  211,  667,  212,
+ /*   380 */   835,   70,  834,  832,  118,  688,   25,  183,   23,  132,
+ /*   390 */   657,   79,   93,  540,  655,  186,   81,   82,  653,  652,
+ /*   400 */   172,  190,  127,  746,  650,  649,  648,  647,  646,  638,
+ /*   410 */   129,  644,  642,   52,  640,   44,   49,  195,  761,  762,
+ /*   420 */   775,  191,  193,  189,  187,   28,  210,   75,  221,  222,
+ /*   430 */   223,  224,  225,  199,  226,  227,  235,   53,  616,  174,
+ /*   440 */   615,  149,   62,  173,   65,  176,  177,  614,  180,  651,
+ /*   450 */   607,  184,   92,  527,  645,  541,  120,  689,  121,  122,
+ /*   460 */   119,  123,  125,  124,   94,  104,    1,  731,  105,  111,
+ /*   470 */   108,  106,  107,  109,  110,    2,   55,   57,  101,  156,
+ /*   480 */   188,    5,  546,  102,   19,    6,  587,   20,    4,   15,
+ /*   490 */    63,    7,  198,  478,  200,  475,  473,  472,  471,  469,
+ /*   500 */   442,  209,   66,   45,   69,   71,   22,  503,  502,  500,
+ /*   510 */    54,  463,  461,  453,  459,  455,  457,  451,  449,  477,
+ /*   520 */   476,  474,  470,  468,   46,  440,   96,  413,  411,  620,
+ /*   530 */   619,  619,  619,  619,  619,  619,  619,  619,  619,  619,
+ /*   540 */    97,
 };
 static const YYCODETYPE yy_lookahead[] = {
  /*     0 */   225,    1,  227,  258,  229,  258,  206,  207,  233,    9,
@@ -278,44 +278,44 @@ static const YYCODETYPE yy_lookahead[] = {
  /*   140 */   262,   21,  264,   97,   24,   25,   26,   27,   28,  241,
  /*   150 */   104,  243,  126,   33,   34,  129,  130,   37,   38,   39,
  /*   160 */    85,   86,   87,   88,   89,   90,   91,   92,   93,   94,
- /*   170 */    95,   96,  225,  258,  227,  228,  229,  230,  231,  232,
- /*   180 */   233,  234,  235,  236,  237,    1,    2,   78,   72,    5,
- /*   190 */   226,    7,  226,    9,   78,    1,    2,   97,  258,    5,
- /*   200 */   209,    7,  245,    9,  104,    1,    2,   44,  244,    5,
- /*   210 */   244,    7,  213,    9,  257,  216,  209,   33,   34,   33,
- /*   220 */    34,   37,  244,   37,   38,   39,   63,   33,   34,  238,
- /*   230 */   102,   37,   69,   70,   71,  107,  213,   33,   34,  216,
- /*   240 */    77,  114,  115,   25,   26,   27,   28,  102,  241,   98,
+ /*   170 */    95,   96,  225,  209,  227,  228,  229,  230,  231,  232,
+ /*   180 */   233,  234,  235,  236,  237,    1,    2,  102,  245,    5,
+ /*   190 */   125,    7,  226,    9,  226,    1,    2,  132,  133,    5,
+ /*   200 */   257,    7,  238,    9,  119,    1,    2,   44,   97,    5,
+ /*   210 */   244,    7,  244,    9,   78,  104,  209,   33,   34,   33,
+ /*   220 */    34,   37,  244,   37,   38,   39,   63,   33,   34,   72,
+ /*   230 */   258,   37,   69,   70,   71,   78,  213,   33,   34,  216,
+ /*   240 */    77,  114,  115,   25,   26,   27,   28,  258,  241,   98,
  /*   250 */   243,   33,   34,  102,    5,   37,   38,   39,    2,   98,
- /*   260 */    97,    5,  258,    7,  119,    9,  105,  104,   85,   86,
- /*   270 */   258,   88,   60,   61,   62,   92,   98,   94,   95,  125,
- /*   280 */   102,   97,   33,   34,    1,  244,  132,  124,  134,   33,
+ /*   260 */    97,    5,  258,    7,  258,    9,  105,  104,   85,   86,
+ /*   270 */   258,   88,   60,   61,   62,   92,  213,   94,   95,  216,
+ /*   280 */   102,   97,   33,   34,    5,  107,    7,  124,   59,   33,
  /*   290 */    34,   97,  108,    5,  131,    7,   64,   65,   66,   67,
- /*   300 */    68,   97,  108,   59,   98,   98,   74,  123,  102,  102,
- /*   310 */   258,    5,  108,    7,   98,  102,  258,  123,  102,  239,
- /*   320 */    37,   64,   65,   66,   67,   68,  258,  123,   64,   65,
- /*   330 */    66,   67,   68,   98,  121,   98,    5,  102,    7,  102,
- /*   340 */   258,   97,  127,  128,  127,  128,  258,    5,  258,    7,
- /*   350 */    72,   73,  258,  239,  258,  258,  258,  239,  239,  103,
+ /*   300 */    68,   97,  108,    1,   98,   98,   74,  123,  102,  102,
+ /*   310 */   258,   98,  108,  258,   98,  102,  102,  123,  102,  127,
+ /*   320 */   128,   64,   65,   66,   67,   68,   97,  123,   64,   65,
+ /*   330 */    66,   67,   68,   98,   98,  121,  258,  102,  102,   37,
+ /*   340 */     5,    5,    7,    7,  127,  128,   72,   73,  258,  258,
+ /*   350 */   258,  258,  258,  244,  258,  239,  239,  239,  239,  103,
  /*   360 */   239,  239,  209,  240,  239,  209,  242,  265,  265,  209,
  /*   370 */   104,  209,  246,  209,  209,  209,  209,  209,  209,  209,
- /*   380 */   209,  209,  209,  209,  209,  209,  209,   59,  209,  209,
- /*   390 */   209,  209,  242,  108,  209,  261,  209,  209,  209,  209,
- /*   400 */   209,  209,  209,  261,  209,  209,  209,  209,  209,  209,
- /*   410 */   209,  209,  209,  118,  255,  210,  120,  117,  210,  210,
- /*   420 */   112,  116,  111,  110,  109,  122,   75,   84,   83,   49,
- /*   430 */    80,   82,  210,   81,   53,  210,   79,   75,    5,  210,
- /*   440 */   133,  214,  214,    5,   58,  133,    5,  133,    5,  133,
- /*   450 */    58,  210,  218,  222,  224,  217,  223,  221,  219,  211,
- /*   460 */   220,  210,  215,  252,  254,  242,  211,  253,    5,  249,
- /*   470 */   251,  250,  248,  247,  212,   58,   87,  133,  125,  105,
- /*   480 */    98,  106,   98,    1,   97,  102,   98,   97,   97,  113,
- /*   490 */   113,   72,    9,   98,   97,  102,  102,   97,   99,   97,
- /*   500 */    99,    5,    5,    5,    5,    5,   76,   15,   72,   16,
- /*   510 */   102,    5,    5,  128,   98,   97,    5,    5,    5,    5,
- /*   520 */     5,    5,    5,    5,  128,    5,    5,    5,    5,    5,
- /*   530 */   102,   76,   59,   58,    0,  269,  269,  269,  269,  269,
- /*   540 */    21,  269,  269,  269,  269,  269,   21,  269,  269,  269,
+ /*   380 */   209,  209,  209,  209,  209,  209,  209,  242,  209,  209,
+ /*   390 */   209,  209,   59,  108,  209,  261,  209,  209,  209,  209,
+ /*   400 */   209,  261,  209,  255,  209,  209,  209,  209,  209,  209,
+ /*   410 */   209,  209,  209,  118,  209,  117,  120,  112,  210,  210,
+ /*   420 */   210,  111,  116,  110,  109,  122,   75,   84,   83,   49,
+ /*   430 */    80,   82,   53,  210,   81,   79,   75,  210,    5,    5,
+ /*   440 */     5,  210,  214,  134,  214,  134,    5,    5,  125,  210,
+ /*   450 */    87,  105,  211,   98,  210,   98,  222,  224,  218,  221,
+ /*   460 */   223,  219,  217,  220,  211,  254,  215,  242,  253,  247,
+ /*   470 */   250,  252,  251,  249,  248,  212,  106,  102,   97,    1,
+ /*   480 */    97,  113,   98,   97,  102,  113,   98,  102,   97,   97,
+ /*   490 */    72,   97,   99,    9,   99,    5,    5,    5,    5,    5,
+ /*   500 */    76,   15,   72,   16,  128,  128,  102,    5,    5,   98,
+ /*   510 */    97,    5,    5,    5,    5,    5,    5,    5,    5,    5,
+ /*   520 */     5,    5,    5,    5,  102,   76,   21,   59,   58,    0,
+ /*   530 */   269,  269,  269,  269,  269,  269,  269,  269,  269,  269,
+ /*   540 */    21,  269,  269,  269,  269,  269,  269,  269,  269,  269,
  /*   550 */   269,  269,  269,  269,  269,  269,  269,  269,  269,  269,
  /*   560 */   269,  269,  269,  269,  269,  269,  269,  269,  269,  269,
  /*   570 */   269,  269,  269,  269,  269,  269,  269,  269,  269,  269,
@@ -335,84 +335,83 @@ static const YYCODETYPE yy_lookahead[] = {
  /*   710 */   269,  269,  269,  269,  269,  269,  269,  269,  269,  269,
  /*   720 */   269,  269,  269,  269,  269,  269,  269,  269,  269,  269,
  /*   730 */   269,  269,  269,  269,  269,  269,  269,  269,  269,  269,
- /*   740 */   269,  269,  269,  269,  269,  269,  269,  269,  269,  269,
- /*   750 */   269,  269,
+ /*   740 */   269,  269,  269,  269,  269,  269,
 };
-#define YY_SHIFT_COUNT    (246)
+#define YY_SHIFT_COUNT    (240)
 #define YY_SHIFT_MIN      (0)
-#define YY_SHIFT_MAX      (534)
+#define YY_SHIFT_MAX      (529)
 static const unsigned short int yy_shift_ofst[] = {
  /*     0 */   163,   75,  183,  184,  204,   79,   79,   79,   79,   79,
  /*    10 */    79,    0,   22,  204,  256,  256,  256,   46,   79,   79,
- /*    20 */    79,   79,   79,  116,  109,  109,  547,  194,  204,  204,
+ /*    20 */    79,   79,   79,  157,  136,  136,  541,  194,  204,  204,
  /*    30 */   204,  204,  204,  204,  204,  204,  204,  204,  204,  204,
  /*    40 */   204,  204,  204,  204,  204,  256,  256,  249,  249,  249,
- /*    50 */   249,  249,  249,   30,  249,  100,   79,   79,  127,  127,
- /*    60 */   128,   79,   79,   79,   79,   79,   79,   79,   79,   79,
+ /*    50 */   249,  249,  249,   30,  249,  111,   79,   79,  127,  127,
+ /*    60 */   178,   79,   79,   79,   79,   79,   79,   79,   79,   79,
  /*    70 */    79,   79,   79,   79,   79,   79,   79,   79,   79,   79,
  /*    80 */    79,   79,   79,   79,   79,   79,   79,   79,   79,   79,
- /*    90 */    79,   79,   79,   79,   79,   79,   79,   79,  266,  328,
- /*   100 */   328,  285,  285,  328,  295,  296,  300,  308,  305,  311,
- /*   110 */   313,  315,  303,  266,  328,  328,  351,  351,  328,  343,
- /*   120 */   345,  380,  350,  349,  381,  352,  357,  328,  362,  328,
- /*   130 */   362,  547,  547,   27,   69,   69,   69,   95,  120,  218,
+ /*    90 */    79,   79,   79,   79,   79,   79,   79,   79,  266,  333,
+ /*   100 */   333,  285,  285,  333,  295,  296,  298,  305,  306,  310,
+ /*   110 */   313,  315,  303,  266,  333,  333,  351,  351,  333,  343,
+ /*   120 */   345,  380,  350,  349,  379,  353,  356,  333,  361,  333,
+ /*   130 */   361,  541,  541,   27,   69,   69,   69,   95,  120,  218,
  /*   140 */   218,  218,  232,  186,  186,  186,  186,  257,  264,   26,
- /*   150 */   154,   61,   61,  212,  161,  151,  178,  206,  207,  288,
- /*   160 */   306,  283,  244,  213,  145,  216,  235,  237,  215,  217,
- /*   170 */   331,  342,  278,  433,  307,  438,  312,  386,  441,  314,
- /*   180 */   443,  316,  392,  463,  344,  417,  389,  353,  374,  382,
- /*   190 */   375,  383,  384,  387,  482,  390,  388,  391,  393,  376,
- /*   200 */   394,  377,  395,  397,  400,  399,  402,  401,  419,  483,
- /*   210 */   496,  497,  498,  499,  500,  430,  492,  436,  493,  385,
- /*   220 */   396,  408,  506,  507,  416,  418,  408,  511,  512,  513,
- /*   230 */   514,  515,  516,  517,  518,  520,  521,  522,  523,  524,
- /*   240 */   428,  455,  519,  525,  473,  475,  534,
+ /*   150 */    65,   61,   61,  212,  161,  151,  206,  207,  213,  279,
+ /*   160 */   288,  302,  229,  214,   85,  216,  235,  236,  192,  217,
+ /*   170 */   335,  336,  274,  433,  309,  434,  435,  311,  441,  442,
+ /*   180 */   363,  323,  346,  355,  370,  375,  357,  381,  478,  383,
+ /*   190 */   384,  386,  382,  368,  385,  372,  388,  391,  392,  393,
+ /*   200 */   394,  395,  418,  484,  490,  491,  492,  493,  494,  424,
+ /*   210 */   486,  430,  487,  376,  377,  404,  502,  503,  411,  413,
+ /*   220 */   404,  506,  507,  508,  509,  510,  511,  512,  513,  514,
+ /*   230 */   515,  516,  517,  518,  422,  449,  505,  519,  468,  470,
+ /*   240 */   529,
 };
 #define YY_REDUCE_COUNT (132)
 #define YY_REDUCE_MIN   (-255)
-#define YY_REDUCE_MAX   (262)
+#define YY_REDUCE_MAX   (263)
 static const short yy_reduce_ofst[] = {
  /*     0 */  -200,  -53, -225, -238, -222, -151, -122, -194, -117,  -92,
- /*    10 */     7, -197, -190, -236, -163,  -36,  -34, -138, -150, -159,
- /*    20 */  -125,   -9, -152,  -78,   -1,   23,  -43, -255, -253, -223,
- /*    30 */  -144,  -85,  -60,    4,   12,   52,   58,   68,   82,   88,
- /*    40 */    90,   94,   96,   97,   98,  -22,   41,   80,  114,  118,
+ /*    10 */     7, -197, -190, -236, -163,  -34,  -32, -138, -150, -159,
+ /*    20 */  -125,  -36, -152,  -78,   23,   63,  -57, -255, -253, -223,
+ /*    30 */  -144,  -28,  -11,    4,    6,   12,   52,   55,   78,   90,
+ /*    40 */    91,   92,   93,   94,   96,  -22,  109,  116,  117,  118,
  /*    50 */   119,  121,  122,  123,  125,  124,  153,  156,  102,  103,
  /*    60 */   126,  160,  162,  164,  165,  166,  167,  168,  169,  170,
  /*    70 */   171,  172,  173,  174,  175,  176,  177,  179,  180,  181,
- /*    80 */   182,  185,  187,  188,  189,  190,  191,  192,  193,  195,
- /*    90 */   196,  197,  198,  199,  200,  201,  202,  203,  150,  205,
- /*   100 */   208,  134,  142,  209,  159,  210,  214,  211,  219,  221,
- /*   110 */   220,  224,  226,  223,  222,  225,  227,  228,  229,  230,
- /*   120 */   233,  231,  234,  236,  239,  240,  238,  241,  248,  251,
- /*   130 */   255,  247,  262,
+ /*    80 */   182,  185,  187,  188,  189,  190,  191,  193,  195,  196,
+ /*    90 */   197,  198,  199,  200,  201,  202,  203,  205,  145,  208,
+ /*   100 */   209,  134,  140,  210,  148,  211,  215,  219,  221,  220,
+ /*   110 */   224,  226,  222,  225,  223,  227,  228,  230,  231,  233,
+ /*   120 */   237,  234,  240,  238,  242,  243,  245,  239,  241,  244,
+ /*   130 */   253,  251,  263,
 };
 static const YYACTIONTYPE yy_default[] = {
- /*     0 */   623,  675,  664,  835,  835,  623,  623,  623,  623,  623,
- /*    10 */   623,  765,  641,  835,  623,  623,  623,  623,  623,  623,
- /*    20 */   623,  623,  623,  677,  677,  677,  760,  623,  623,  623,
- /*    30 */   623,  623,  623,  623,  623,  623,  623,  623,  623,  623,
- /*    40 */   623,  623,  623,  623,  623,  623,  623,  623,  623,  623,
- /*    50 */   623,  623,  623,  623,  623,  623,  623,  623,  784,  784,
- /*    60 */   758,  623,  623,  623,  623,  623,  623,  623,  623,  623,
- /*    70 */   623,  623,  623,  623,  623,  623,  623,  623,  623,  662,
- /*    80 */   623,  660,  623,  623,  623,  623,  623,  623,  623,  623,
- /*    90 */   623,  623,  623,  623,  623,  649,  623,  623,  623,  643,
- /*   100 */   643,  623,  623,  643,  791,  795,  789,  777,  785,  776,
- /*   110 */   772,  771,  799,  623,  643,  643,  672,  672,  643,  693,
- /*   120 */   691,  689,  681,  687,  683,  685,  679,  643,  670,  643,
- /*   130 */   670,  708,  721,  623,  800,  834,  790,  818,  817,  830,
- /*   140 */   824,  823,  623,  822,  821,  820,  819,  623,  623,  623,
- /*   150 */   623,  826,  825,  623,  623,  623,  623,  623,  623,  623,
- /*   160 */   623,  623,  802,  796,  792,  623,  623,  623,  623,  623,
- /*   170 */   623,  623,  623,  623,  623,  623,  623,  623,  623,  623,
- /*   180 */   623,  623,  623,  623,  623,  623,  623,  623,  757,  623,
- /*   190 */   623,  766,  623,  623,  623,  623,  623,  623,  786,  623,
- /*   200 */   778,  623,  623,  623,  623,  623,  623,  734,  623,  623,
- /*   210 */   623,  623,  623,  623,  623,  623,  623,  623,  623,  623,
- /*   220 */   623,  839,  623,  623,  623,  728,  837,  623,  623,  623,
- /*   230 */   623,  623,  623,  623,  623,  623,  623,  623,  623,  623,
- /*   240 */   696,  623,  647,  645,  623,  639,  623,
+ /*     0 */   617,  669,  658,  829,  829,  617,  617,  617,  617,  617,
+ /*    10 */   617,  759,  635,  829,  617,  617,  617,  617,  617,  617,
+ /*    20 */   617,  617,  617,  671,  671,  671,  754,  617,  617,  617,
+ /*    30 */   617,  617,  617,  617,  617,  617,  617,  617,  617,  617,
+ /*    40 */   617,  617,  617,  617,  617,  617,  617,  617,  617,  617,
+ /*    50 */   617,  617,  617,  617,  617,  617,  617,  617,  778,  778,
+ /*    60 */   752,  617,  617,  617,  617,  617,  617,  617,  617,  617,
+ /*    70 */   617,  617,  617,  617,  617,  617,  617,  617,  617,  656,
+ /*    80 */   617,  654,  617,  617,  617,  617,  617,  617,  617,  617,
+ /*    90 */   617,  617,  617,  617,  617,  643,  617,  617,  617,  637,
+ /*   100 */   637,  617,  617,  637,  785,  789,  783,  771,  779,  770,
+ /*   110 */   766,  765,  793,  617,  637,  637,  666,  666,  637,  687,
+ /*   120 */   685,  683,  675,  681,  677,  679,  673,  637,  664,  637,
+ /*   130 */   664,  702,  715,  617,  794,  828,  784,  812,  811,  824,
+ /*   140 */   818,  817,  617,  816,  815,  814,  813,  617,  617,  617,
+ /*   150 */   617,  820,  819,  617,  617,  617,  617,  617,  617,  617,
+ /*   160 */   617,  617,  796,  790,  786,  617,  617,  617,  617,  617,
+ /*   170 */   617,  617,  617,  617,  617,  617,  617,  617,  617,  617,
+ /*   180 */   617,  617,  751,  617,  617,  760,  617,  617,  617,  617,
+ /*   190 */   617,  617,  780,  617,  772,  617,  617,  617,  617,  617,
+ /*   200 */   617,  728,  617,  617,  617,  617,  617,  617,  617,  617,
+ /*   210 */   617,  617,  617,  617,  617,  833,  617,  617,  617,  722,
+ /*   220 */   831,  617,  617,  617,  617,  617,  617,  617,  617,  617,
+ /*   230 */   617,  617,  617,  617,  690,  617,  641,  639,  617,  633,
+ /*   240 */   617,
 };
 /********** End of lemon-generated parsing tables *****************************/
 
@@ -565,8 +564,8 @@ static const YYCODETYPE yyFallback[] = {
     0,  /*        SET => nothing */
     0,  /*       KILL => nothing */
     0,  /* CONNECTION => nothing */
-    0,  /*      COLON => nothing */
     0,  /*     STREAM => nothing */
+    0,  /*      COLON => nothing */
     1,  /*      ABORT => ID */
     1,  /*      AFTER => ID */
     1,  /*     ATTACH => ID */
@@ -856,8 +855,8 @@ static const char *const yyTokenName[] = {
   /*  130 */ "SET",
   /*  131 */ "KILL",
   /*  132 */ "CONNECTION",
-  /*  133 */ "COLON",
-  /*  134 */ "STREAM",
+  /*  133 */ "STREAM",
+  /*  134 */ "COLON",
   /*  135 */ "ABORT",
   /*  136 */ "AFTER",
   /*  137 */ "ATTACH",
@@ -1216,9 +1215,9 @@ static const char *const yyRuleName[] = {
  /* 214 */ "cmd ::= ALTER TABLE ids cpxName DROP TAG ids",
  /* 215 */ "cmd ::= ALTER TABLE ids cpxName CHANGE TAG ids ids",
  /* 216 */ "cmd ::= ALTER TABLE ids cpxName SET TAG ids EQ tagitem",
- /* 217 */ "cmd ::= KILL CONNECTION IPTOKEN COLON INTEGER",
- /* 218 */ "cmd ::= KILL STREAM IPTOKEN COLON INTEGER COLON INTEGER",
- /* 219 */ "cmd ::= KILL QUERY IPTOKEN COLON INTEGER COLON INTEGER",
+ /* 217 */ "cmd ::= KILL CONNECTION INTEGER",
+ /* 218 */ "cmd ::= KILL STREAM INTEGER COLON INTEGER",
+ /* 219 */ "cmd ::= KILL QUERY INTEGER COLON INTEGER",
 };
 #endif /* NDEBUG */
 
@@ -1893,9 +1892,9 @@ static const struct {
   {  207,   -7 }, /* (214) cmd ::= ALTER TABLE ids cpxName DROP TAG ids */
   {  207,   -8 }, /* (215) cmd ::= ALTER TABLE ids cpxName CHANGE TAG ids ids */
   {  207,   -9 }, /* (216) cmd ::= ALTER TABLE ids cpxName SET TAG ids EQ tagitem */
-  {  207,   -5 }, /* (217) cmd ::= KILL CONNECTION IPTOKEN COLON INTEGER */
-  {  207,   -7 }, /* (218) cmd ::= KILL STREAM IPTOKEN COLON INTEGER COLON INTEGER */
-  {  207,   -7 }, /* (219) cmd ::= KILL QUERY IPTOKEN COLON INTEGER COLON INTEGER */
+  {  207,   -3 }, /* (217) cmd ::= KILL CONNECTION INTEGER */
+  {  207,   -5 }, /* (218) cmd ::= KILL STREAM INTEGER COLON INTEGER */
+  {  207,   -5 }, /* (219) cmd ::= KILL QUERY INTEGER COLON INTEGER */
 };
 
 static void yy_accept(yyParser*);  /* Forward Declaration */
@@ -2734,14 +2733,14 @@ static void yy_reduce(
     setSQLInfo(pInfo, pAlterTable, NULL, TSDB_SQL_ALTER_TABLE);
 }
         break;
-      case 217: /* cmd ::= KILL CONNECTION IPTOKEN COLON INTEGER */
-{yymsp[-2].minor.yy0.n += (yymsp[-1].minor.yy0.n + yymsp[0].minor.yy0.n); setKillSQL(pInfo, TSDB_SQL_KILL_CONNECTION, &yymsp[-2].minor.yy0);}
+      case 217: /* cmd ::= KILL CONNECTION INTEGER */
+{setKillSQL(pInfo, TSDB_SQL_KILL_CONNECTION, &yymsp[0].minor.yy0);}
         break;
-      case 218: /* cmd ::= KILL STREAM IPTOKEN COLON INTEGER COLON INTEGER */
-{yymsp[-4].minor.yy0.n += (yymsp[-3].minor.yy0.n + yymsp[-2].minor.yy0.n + yymsp[-1].minor.yy0.n + yymsp[0].minor.yy0.n); setKillSQL(pInfo, TSDB_SQL_KILL_STREAM, &yymsp[-4].minor.yy0);}
+      case 218: /* cmd ::= KILL STREAM INTEGER COLON INTEGER */
+{yymsp[-2].minor.yy0.n += (yymsp[-1].minor.yy0.n + yymsp[0].minor.yy0.n); setKillSQL(pInfo, TSDB_SQL_KILL_STREAM, &yymsp[-2].minor.yy0);}
         break;
-      case 219: /* cmd ::= KILL QUERY IPTOKEN COLON INTEGER COLON INTEGER */
-{yymsp[-4].minor.yy0.n += (yymsp[-3].minor.yy0.n + yymsp[-2].minor.yy0.n + yymsp[-1].minor.yy0.n + yymsp[0].minor.yy0.n); setKillSQL(pInfo, TSDB_SQL_KILL_QUERY, &yymsp[-4].minor.yy0);}
+      case 219: /* cmd ::= KILL QUERY INTEGER COLON INTEGER */
+{yymsp[-2].minor.yy0.n += (yymsp[-1].minor.yy0.n + yymsp[0].minor.yy0.n); setKillSQL(pInfo, TSDB_SQL_KILL_QUERY, &yymsp[-2].minor.yy0);}
         break;
       default:
         break;
diff --git a/src/tsdb/src/tsdbRWHelper.c b/src/tsdb/src/tsdbRWHelper.c
index fd317e9d0cebf016652952d9eb370d5fbad95143..eab70b591349cacfc382c206e393a4846283a559 100644
--- a/src/tsdb/src/tsdbRWHelper.c
+++ b/src/tsdb/src/tsdbRWHelper.c
@@ -977,7 +977,8 @@ static int tsdbMergeDataWithBlock(SRWHelper *pHelper, int blkIdx, SDataCols *pDa
       // tdResetDataCols(pHelper->pDataCols[1]);
       while (true) {
         if (iter1 >= pHelper->pDataCols[0]->numOfRows && iter2 >= rows3) break;
-        tdMergeTwoDataCols(pHelper->pDataCols[1], pHelper->pDataCols[0], &iter1, pDataCols, &iter2, pHelper->config.maxRowsPerFileBlock * 4 / 5);
+        tdMergeTwoDataCols(pHelper->pDataCols[1], pHelper->pDataCols[0], &iter1, pHelper->pDataCols[0]->numOfRows,
+                           pDataCols, &iter2, rowsWritten, pHelper->config.maxRowsPerFileBlock * 4 / 5);
         ASSERT(pHelper->pDataCols[1]->numOfRows > 0);
         if (tsdbWriteBlockToFile(pHelper, &(pHelper->files.dataF), pHelper->pDataCols[1],
                                  pHelper->pDataCols[1]->numOfRows, &compBlock, false, true) < 0)
@@ -989,54 +990,6 @@ static int tsdbMergeDataWithBlock(SRWHelper *pHelper, int blkIdx, SDataCols *pDa
         }
         round++;
         blkIdx++;
-        // TODO: the blkIdx here is not correct
-
-        // if (iter1 >= pHelper->pDataCols[0]->numOfRows && iter2 >= rows3) {
-        //   if (pHelper->pDataCols[1]->numOfRows > 0) {
-        //     if (tsdbWriteBlockToFile(pHelper, &pHelper->files.dataF, pHelper->pDataCols[1],
-        //                              pHelper->pDataCols[1]->numOfRows, &compBlock, false, true) < 0)
-        //       goto _err;
-        //     // TODO: the blkIdx here is not correct
-        //     tsdbAddSubBlock(pHelper, &compBlock, blkIdx, pHelper->pDataCols[1]->numOfRows);
-        //   }
-        // }
-
-        // TSKEY key1 = iter1 >= pHelper->pDataCols[0]->numOfRows
-        //                  ? INT64_MAX
-        //                  : ((int64_t *)(pHelper->pDataCols[0]->cols[0].pData))[iter1];
-        // TSKEY key2 = iter2 >= rowsWritten ? INT64_MAX : ((int64_t *)(pDataCols->cols[0].pData))[iter2];
-
-        // if (key1 < key2) {
-        //   for (int i = 0; i < pDataCols->numOfCols; i++) {
-        //     SDataCol *pDataCol = pHelper->pDataCols[1]->cols + i;
-        //     memcpy(((char *)pDataCol->pData + TYPE_BYTES[pDataCol->type] * pHelper->pDataCols[1]->numOfRows),
-        //            ((char *)pHelper->pDataCols[0]->cols[i].pData + TYPE_BYTES[pDataCol->type] * iter1),
-        //            TYPE_BYTES[pDataCol->type]);
-        //   }
-        //   pHelper->pDataCols[1]->numOfRows++;
-        //   iter1++;
-        // } else if (key1 == key2) {
-        //   // TODO: think about duplicate key cases
-        //   ASSERT(false);
-        // } else {
-        //   for (int i = 0; i < pDataCols->numOfCols; i++) {
-        //     SDataCol *pDataCol = pHelper->pDataCols[1]->cols + i;
-        //     memcpy(((char *)pDataCol->pData + TYPE_BYTES[pDataCol->type] * pHelper->pDataCols[1]->numOfRows),
-        //            ((char *)pDataCols->cols[i].pData +
-        //             TYPE_BYTES[pDataCol->type] * iter2),
-        //            TYPE_BYTES[pDataCol->type]);
-        //   }
-        //   pHelper->pDataCols[1]->numOfRows++;
-        //   iter2++;
-        // }
-
-        // if (pHelper->pDataCols[0]->numOfRows >= pHelper->config.maxRowsPerFileBlock * 4 / 5) {
-        //   if (tsdbWriteBlockToFile(pHelper, &pHelper->files.dataF, pHelper->pDataCols[1], pHelper->pDataCols[1]->numOfRows, &compBlock, false, true) < 0) goto _err;
-        //   // TODO: blkIdx here is not correct, fix it
-        //   tsdbInsertSuperBlock(pHelper, &compBlock, blkIdx);
-
-        //   tdResetDataCols(pHelper->pDataCols[1]);
-        // }
       }
     }
   }
diff --git a/src/util/inc/tcache.h b/src/util/inc/tcache.h
index 6a22bdea6a4abd5423de0495894633661eec7057..2369f63f16fefa3bfd49d0b7837eab011e17c798 100644
--- a/src/util/inc/tcache.h
+++ b/src/util/inc/tcache.h
@@ -111,6 +111,15 @@ void *taosCachePut(SCacheObj *pCacheObj, const char *key, const void *pData, siz
  */
 void *taosCacheAcquireByName(SCacheObj *pCacheObj, const char *key);
 
+/**
+ * update the expire time of data in cache 
+ * @param pCacheObj     cache object
+ * @param key           key
+ * @param expireTime    new expire time of data
+ * @return
+ */ 
+void* taosCacheUpdateExpireTimeByName(SCacheObj *pCacheObj, const char *key, uint64_t expireTime);
+
 /**
  * Add one reference count for the exist data, and assign this data for a new owner.
  * The new owner needs to invoke the taosCacheRelease when it does not need this data anymore.
diff --git a/src/util/src/tcache.c b/src/util/src/tcache.c
index 82873f9906affc26fc995a4dc326521911e7f008..b0291b5cc0e9e3bf99ec2825582e7786629f2c6f 100644
--- a/src/util/src/tcache.c
+++ b/src/util/src/tcache.c
@@ -488,6 +488,35 @@ void *taosCacheAcquireByName(SCacheObj *pCacheObj, const char *key) {
   return (ptNode != NULL) ? (*ptNode)->data : NULL;
 }
 
+void* taosCacheUpdateExpireTimeByName(SCacheObj *pCacheObj, const char *key, uint64_t expireTime) {
+  if (pCacheObj == NULL || taosHashGetSize(pCacheObj->pHashTable) == 0) {
+    return NULL;
+  }
+  
+  uint32_t keyLen = (uint32_t)strlen(key);
+  
+  __cache_rd_lock(pCacheObj);
+  
+  SCacheDataNode **ptNode = (SCacheDataNode **)taosHashGet(pCacheObj->pHashTable, key, keyLen);
+  if (ptNode != NULL) {
+     T_REF_INC(*ptNode);
+    (*ptNode)->expiredTime = expireTime;
+  }
+  
+  __cache_unlock(pCacheObj);
+  
+  if (ptNode != NULL) {
+    atomic_add_fetch_32(&pCacheObj->statistics.hitCount, 1);
+    uTrace("key:%s expireTime is updated in cache, %p refcnt:%d", key, (*ptNode), T_REF_VAL_GET(*ptNode));
+  } else {
+    atomic_add_fetch_32(&pCacheObj->statistics.missCount, 1);
+    uTrace("key:%s not in cache, retrieved failed", key);
+  }
+  
+  atomic_add_fetch_32(&pCacheObj->statistics.totalAccess, 1);
+  return (ptNode != NULL) ? (*ptNode)->data : NULL;
+}
+
 void *taosCacheAcquireByData(SCacheObj *pCacheObj, void *data) {
   if (pCacheObj == NULL || data == NULL) return NULL;
   
diff --git a/tests/pytest/query/filter.py b/tests/pytest/query/filter.py
index 43c8e5bf0aa612079b26fdf9edc9d303023a1405..f107985f150a05cdd38a7fa1453d59d35c8a903a 100644
--- a/tests/pytest/query/filter.py
+++ b/tests/pytest/query/filter.py
@@ -87,7 +87,7 @@ class TDTestCase:
 
         # <> for timestamp type
         tdSql.query("select * from db.st where ts <> '2020-05-13 10:00:00.002'")
-        #tdSql.checkRows(4)
+        # tdSql.checkRows(4)
 
         # <> for numeric type
         tdSql.query("select * from db.st where tagtype <> 2")
@@ -96,7 +96,7 @@ class TDTestCase:
         # <> for nchar type
         tdSql.query("select * from db.st where name <> 'first'")
         tdSql.checkRows(4)
-        
+
         # % for nchar type
         tdSql.query("select * from db.st where name like 'fi%'")
         tdSql.checkRows(2)
diff --git a/tests/pytest/query/filterCombo.py b/tests/pytest/query/filterCombo.py
index c9c7ade73eece9a33ae99177dc680463e22d2701..f72b913c92fa1d967aac1e15e050bda23fc7342d 100644
--- a/tests/pytest/query/filterCombo.py
+++ b/tests/pytest/query/filterCombo.py
@@ -42,14 +42,17 @@ class TDTestCase:
             ('2020-05-13 10:00:00.005', 3, 'third')""")
 
         # query with filter condition A OR condition B
-        tdSql.query("select * from db.st where ts > '2020-05-13 10:00:00.002' AND tagtype < 2")
+        tdSql.query(
+            "select * from db.st where ts > '2020-05-13 10:00:00.002' AND tagtype < 2")
         tdSql.checkRows(1)
 
         # query with filter condition A OR condition B, error expected
-        tdSql.error("select * from db.st where ts > '2020-05-13 10:00:00.002' OR tagtype < 2")
+        tdSql.error(
+            "select * from db.st where ts > '2020-05-13 10:00:00.002' OR tagtype < 2")
 
         # illegal condition
-        tdSql.error("select * from db.st where ts != '2020-05-13 10:00:00.002' OR tagtype < 2")        
+        tdSql.error(
+            "select * from db.st where ts != '2020-05-13 10:00:00.002' OR tagtype < 2")
         tdSql.error("select * from db.st where tagtype <> 1 OR tagtype < 2")
 
     def stop(self):
diff --git a/tests/pytest/query/queryError.py b/tests/pytest/query/queryError.py
index 95924f48cc062b3756ab5e80fb72b45f707f8939..f1fd9c0dec480d8d4e0b49635fd23b275eeeaa24 100644
--- a/tests/pytest/query/queryError.py
+++ b/tests/pytest/query/queryError.py
@@ -41,18 +41,17 @@ class TDTestCase:
             ('2020-05-13 10:00:00.002', 3, 'third') dev_002 VALUES('2020-05-13 10:00:00.003', 1, 'first'), ('2020-05-13 10:00:00.004', 2, 'second'),
             ('2020-05-13 10:00:00.005', 3, 'third')""")
 
-        
         # query first .. as ..
-        tdSql.error("select first(*) as one from st")    
+        tdSql.error("select first(*) as one from st")
 
         # query last .. as ..
-        tdSql.error("select last(*) as latest from st")        
+        tdSql.error("select last(*) as latest from st")
 
         # query last row .. as ..
-        tdSql.error("select last_row as latest from st") 
+        tdSql.error("select last_row as latest from st")
 
         # query distinct on normal colnum
-        tdSql.error("select distinct tagtype from st")     
+        tdSql.error("select distinct tagtype from st")
 
         # query .. order by non-time field
         tdSql.error("select * from st order by name")
diff --git a/tests/pytest/query/queryNormal.py b/tests/pytest/query/queryNormal.py
index 442661f72a4510e9d311ee38bbc16a204bf71670..814c627d89790dd730d1e86d9101a612095678be 100644
--- a/tests/pytest/query/queryNormal.py
+++ b/tests/pytest/query/queryNormal.py
@@ -28,17 +28,20 @@ class TDTestCase:
 
         print("==============step1")
 
-        tdSql.execute("create table stb1 (ts timestamp, c1 int, c2 float) tags(t1 int, t2 binary(10), t3 nchar(10))")
-        tdSql.execute("insert into tb1 using stb1 tags(1,'tb1', '表1') values ('2020-04-18 15:00:00.000', 1, 0.1), ('2020-04-18 15:00:01.000', 2, 0.1)")
-        tdSql.execute("insert into tb2 using stb1 tags(2,'tb2', '表2') values ('2020-04-18 15:00:02.000', 3, 2.1), ('2020-04-18 15:00:03.000', 4, 2.2)")        
-        
-        # inner join --- bug 
+        tdSql.execute(
+            "create table stb1 (ts timestamp, c1 int, c2 float) tags(t1 int, t2 binary(10), t3 nchar(10))")
+        tdSql.execute(
+            "insert into tb1 using stb1 tags(1,'tb1', '表1') values ('2020-04-18 15:00:00.000', 1, 0.1), ('2020-04-18 15:00:01.000', 2, 0.1)")
+        tdSql.execute(
+            "insert into tb2 using stb1 tags(2,'tb2', '表2') values ('2020-04-18 15:00:02.000', 3, 2.1), ('2020-04-18 15:00:03.000', 4, 2.2)")
+
+        # inner join --- bug
         tdSql.query("select * from tb1 a, tb2 b where a.ts = b.ts")
         tdSql.checkRows(1)
 
         # join 3 tables -- bug exists
         tdSql.query("select stb_t.ts, stb_t.dscrption, stb_t.temperature, stb_p.id, stb_p.dscrption, stb_p.pressure,stb_v.velocity from stb_p, stb_t, stb_v where stb_p.ts=stb_t.ts and stb_p.ts=stb_v.ts and stb_p.id = stb_t.id")
-        
+
         # query show stable
         tdSql.query("show stables")
         tdSql.checkRows(1)
@@ -51,15 +54,15 @@ class TDTestCase:
         tdSql.query("select count(*) from stb1")
         tdSql.checkData(0, 0, 4)
 
-        # query first 
+        # query first
         tdSql.query("select first(*) from stb1")
         tdSql.checkData(0, 1, 1)
-        
-        # query last 
+
+        # query last
         tdSql.query("select last(*) from stb1")
         tdSql.checkData(0, 1, 4)
 
-        # query last_row 
+        # query last_row
         tdSql.query("select last_row(*) from stb1")
         tdSql.checkData(0, 1, 4)
 
@@ -70,7 +73,7 @@ class TDTestCase:
         # query first ... as
         tdSql.query("select first(*) as begin from stb1")
         tdSql.checkData(0, 1, 1)
-        
+
         # query last ... as
         tdSql.query("select last(*) as end from stb1")
         tdSql.checkData(0, 1, 4)
@@ -93,7 +96,7 @@ class TDTestCase:
 
         # query ... alias for table ---- bug
         tdSql.query("select t.ts from tb1 t")
-        tdSql.checkRows(2)       
+        tdSql.checkRows(2)
 
         # query ... tbname
         tdSql.query("select tbname from stb1")
diff --git a/tests/pytest/random-test/random-test-multi-threading-3.py b/tests/pytest/random-test/random-test-multi-threading-3.py
index c7b39ca1a13eb5b288f29c333307d1b5f12e671b..4d1ef3b11d90cb8cbb72094b8f6a7d9ae091bc59 100644
--- a/tests/pytest/random-test/random-test-multi-threading-3.py
+++ b/tests/pytest/random-test/random-test-multi-threading-3.py
@@ -111,7 +111,6 @@ class Test (threading.Thread):
                 last_tb)
             written = written + 1
 
-
     def drop_stable(self):
         tdLog.info("drop_stable")
         global last_stb
@@ -152,7 +151,6 @@ class Test (threading.Thread):
                 last_tb = ""
                 written = 0
 
-
     def query_data_from_stable(self):
         tdLog.info("query_data_from_stable")
         global last_stb
@@ -164,7 +162,6 @@ class Test (threading.Thread):
             tdLog.info("will query data from super table")
             tdSql.execute('select * from %s' % last_stb)
 
-
     def reset_query_cache(self):
         tdLog.info("reset_query_cache")
         global last_tb
@@ -232,7 +229,7 @@ class Test (threading.Thread):
                 self.threadLock.acquire()
                 tdLog.notice("first thread")
                 randDataOp = random.randint(1, 3)
-                dataOp.get(randDataOp , lambda: "ERROR")()
+                dataOp.get(randDataOp, lambda: "ERROR")()
                 self.threadLock.release()
 
         elif (self.threadId == 2):
diff --git a/tests/pytest/random-test/random-test-multi-threading.py b/tests/pytest/random-test/random-test-multi-threading.py
index d887b714ba193a23daf9c3a8ca41edb780dfd7e5..1c06f3a1ddd5bb527bd79fb8e15d003e576a466e 100644
--- a/tests/pytest/random-test/random-test-multi-threading.py
+++ b/tests/pytest/random-test/random-test-multi-threading.py
@@ -111,7 +111,6 @@ class Test (threading.Thread):
                 last_tb)
             written = written + 1
 
-
     def drop_stable(self):
         tdLog.info("drop_stable")
         global last_stb
@@ -154,7 +153,6 @@ class Test (threading.Thread):
                 last_tb = ""
                 written = 0
 
-
     def query_data_from_stable(self):
         tdLog.info("query_data_from_stable")
         global last_stb
@@ -166,7 +164,6 @@ class Test (threading.Thread):
             tdLog.info("will query data from super table")
             tdSql.execute('select * from %s' % last_stb)
 
-
     def reset_query_cache(self):
         tdLog.info("reset_query_cache")
         global last_tb
@@ -230,7 +227,7 @@ class Test (threading.Thread):
                 self.threadLock.acquire()
                 tdLog.notice("first thread")
                 randDataOp = random.randint(1, 3)
-                dataOp.get(randDataOp , lambda: "ERROR")()
+                dataOp.get(randDataOp, lambda: "ERROR")()
                 self.threadLock.release()
 
         elif (self.threadId == 2):
diff --git a/tests/pytest/random-test/random-test.py b/tests/pytest/random-test/random-test.py
index a8ff4d81d121c7fad298357b74dd1658894becbf..855cabdeddf5c437a658f145ce2fa66415b001a3 100644
--- a/tests/pytest/random-test/random-test.py
+++ b/tests/pytest/random-test/random-test.py
@@ -112,7 +112,6 @@ class Test:
             tdSql.execute('drop table %s' % self.last_stb)
             self.last_stb = ""
 
-
     def query_data_from_stable(self):
         tdLog.info("query_data_from_stable")
         if (self.last_stb == ""):
@@ -122,20 +121,21 @@ class Test:
             tdLog.info("will query data from super table")
             tdSql.execute('select * from %s' % self.last_stb)
 
-
     def restart_database(self):
         tdLog.info("restart_databae")
         tdDnodes.stop(1)
         tdDnodes.start(1)
         tdLog.sleep(5)
 
-
     def force_restart_database(self):
         tdLog.info("force_restart_database")
         tdDnodes.forcestop(1)
         tdDnodes.start(1)
         tdLog.sleep(5)
         tdSql.prepare()
+        self.last_tb = ""
+        self.last_stb = ""
+        self.written = 0
 
     def drop_table(self):
         tdLog.info("drop_table")
@@ -159,6 +159,9 @@ class Test:
         tdDnodes.start(1)
         tdLog.sleep(5)
         tdSql.prepare()
+        self.last_tb = ""
+        self.last_stb = ""
+        self.written = 0
 
     def delete_datafiles(self):
         tdLog.info("delete_datafiles")
@@ -173,6 +176,9 @@ class Test:
         tdDnodes.start(1)
         tdLog.sleep(10)
         tdSql.prepare()
+        self.last_tb = ""
+        self.last_stb = ""
+        self.written = 0
 
 
 class TDTestCase:
diff --git a/tests/script/unique/arbitrator/dn3_mn1_replica_change.sim b/tests/script/unique/arbitrator/dn3_mn1_replica_change.sim
index f34322a25561ab54e942c000157a9d90664b8197..8b75bba29b8817223c6ef4ba959f8a2359a3e8c5 100644
--- a/tests/script/unique/arbitrator/dn3_mn1_replica_change.sim
+++ b/tests/script/unique/arbitrator/dn3_mn1_replica_change.sim
@@ -4,9 +4,9 @@ system sh/deploy.sh -n dnode2 -i 2
 system sh/deploy.sh -n dnode3 -i 3
 system sh/deploy.sh -n dnode4 -i 4
 
-system sh/cfg.sh -n dnode1 -c numOfMPeers -v 1
-system sh/cfg.sh -n dnode2 -c numOfMPeers -v 1
-system sh/cfg.sh -n dnode3 -c numOfMPeers -v 1
+system sh/cfg.sh -n dnode1 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode2 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode3 -c numOfMnodes -v 1
 
 system sh/cfg.sh -n dnode1 -c walLevel -v 2
 system sh/cfg.sh -n dnode2 -c walLevel -v 2
@@ -28,11 +28,6 @@ system sh/cfg.sh -n dnode2 -c alternativeRole -v 2
 system sh/cfg.sh -n dnode3 -c alternativeRole -v 2
 system sh/cfg.sh -n dnode4 -c alternativeRole -v 2
 
-system sh/cfg.sh -n dnode1 -c numOfTotalVnodes -v 4
-system sh/cfg.sh -n dnode2 -c numOfTotalVnodes -v 4
-system sh/cfg.sh -n dnode3 -c numOfTotalVnodes -v 4
-system sh/cfg.sh -n dnode4 -c numOfTotalVnodes -v 4
-
 system sh/cfg.sh -n dnode1 -c maxtablesPerVnode -v 4
 system sh/cfg.sh -n dnode2 -c maxtablesPerVnode -v 4
 system sh/cfg.sh -n dnode3 -c maxtablesPerVnode -v 4
@@ -94,6 +89,72 @@ if $data00 != $totalRows then
 	return -1
 endi
 
+
+
+
+print ============== step2-1: start dnode2 for falling disc, then restart dnode2, and check rows
+system sh/exec.sh -n dnode2 -s stop
+sleep $sleepTimer
+wait_dnode2_offline_0:
+sql show dnodes
+if $rows != 2 then
+  sleep 2000
+  goto wait_dnode2_offline_0
+endi
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3
+#print $data0_4  $data1_4  $data2_4  $data3_4  $data4_4
+#print $data0_5  $data1_5  $data2_5  $data3_5  $data4_5
+#print $data0_6  $data1_6  $data2_6  $data3_6  $data4_6
+#$dnode1Status = $data4_1  
+$dnode2Status = $data4_2
+#$dnode3Status = $data4_3  
+#$dnode4Status = $data4_4 
+#$dnode5Status = $data4_5
+
+if $dnode2Status != offline then
+  sleep 2000
+  goto wait_dnode2_offline_0
+endi
+
+system sh/exec.sh -n dnode2 -s start
+sleep $sleepTimer
+wait_dnode2_reready:
+sql show dnodes
+if $rows != 2 then
+  sleep 2000
+  goto wait_dnode2_reready
+endi
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3
+#print $data0_4  $data1_4  $data2_4  $data3_4  $data4_4
+#print $data0_5  $data1_5  $data2_5  $data3_5  $data4_5
+#print $data0_6  $data1_6  $data2_6  $data3_6  $data4_6
+#$dnode1Status = $data4_1  
+$dnode2Status = $data4_2
+#$dnode3Status = $data4_3  
+#$dnode4Status = $data4_4 
+#$dnode5Status = $data4_5
+
+if $dnode2Status != ready then
+  sleep 2000
+  goto wait_dnode2_reready
+endi
+
+sql select count(*) from $stb
+sleep 1000
+print data00 $data00
+if $data00 != $totalRows then
+	return -1
+endi
+
+
+
+
+
+
 print ============== step3: start dnode3 and add into cluster , then alter replica from 1 to 2, and waiting sync
 system sh/exec.sh -n dnode3 -s start
 sql create dnode $hostname3